Two days later, on 15 July, she returned home.

Her boyfriend, Thomar Latrell Simmons posted on Facebook announcing her return and attesting to her claim that she was kidnapped. He wrote that Ms Russell had been “fighting for her life for 48 hours” and not “physically or mentally stable” enough to speak about her kidnapping.

“I don’t even know how to start off this post but to only say thank you to my lord & savior Jesus Christ for saving my girlfriend’s life!” he said on Sunday.

On Sunday, Ms Russell’s boyfriend Thomar Latrell Simmons claimed that she had barely survived her ordeal after being kidnapped.

“She was literally fighting for her life for 48 hours, so until she’s physically & mentally stable again she is not able to give any updates or whereabouts on her kidnapper at this very moment,” Mr Simmons wrote.

Mr Simmons added that he had been searching for Ms Russell “nonstop” since he was notified of her disappearance.

He said there had been “false allegations & assumptions” that he had something to do with her abduction, adding he hadn’t let the rumours distract him.

Mr Simmons thanked the family, friends and fellow churchgoers for their help.

“All I (ask) from everyone right now is to be respectful of Carlee’s situation.”

Ms Russell lives with her parents in Hoover, a fast-growing suburb on the southern outskirts of Birmingham.

She worked part-time at The Woodhouse Spa and was also a student at Jefferson State Community College, where she was studying to be a nurse, according to AL.com.

Jefferson State issued a statement on Friday saying it was “extremely concerned” for Ms Russell’s safety.

On the day she went missing, Ms Russell had spent time with officers from Harpersville Police Department, according to a Facebook post on Friday asking for help finding her.

“We were honored to spend time with this smart, courteous and honoring young woman yesterday,” the department said on social media.

“She was handling some business in the Town of Harpersville yesterday and we were so impressed by her respect, poise, good attitude and her drive to become a nursing student and help others.”

The police department later issued an update after its initial post led to the spread of unfounded rumours.

“For clarification, Ms Russell was not at the Harpersville Police Department,” they later added. “Contrary to the stigma, we consistently encounter citizens while engaging the community and those occasions are primarily positive.”

The Secret Service analysed her phone and computers, and found internet searches that are “very relevant to this case,” Mr Derzis said.

On July 11, Ms Russell searched: “Do you have to pay for amber alert or search.”

On the day of her alleged abduction, she searched “how to take money from a register without being caught”. She also searched for a one-way bus ticket from Birmingham to Nashville departing that day, Mr Derzis said.

She searched for Taken, a 2008 thriller about an abduction starring Liam Neeson.

“There were other searches on Carlee’s phone that appear to shed some light on her mindset, but out of respect to her privacy we will not be releasing the content of those searches at this time,” the police chief said.

“We’ve asked to interview Carlee a second time, but we have not been granted that request. As you can see there are many questions left to be answered, but only Carlee can provide those answers.

“What we can say is that we’ve been unable to verify most of Carlee’s initial statement made to investigators, and we have no reason to believe that there is a threat to public safety.”

At a press conference on Wednesday 19 July, Mr Derzis said detectives conducted a brief interview with Ms Russell in hospital, where she claimed to have been abducted by a man with orange hair and a bald spot “who came out of the trees”.

She claimed the man picked her up and forced her into a car, and the next thing she remembered she was in the trailer of an 18-wheeler semi, Mr Derzis said.

Ms Russell told police that she heard a woman and a baby in the semi, but didn’t see them.

She claimed to have escaped from the trailer, before being recaptured and taken to a house, where her alleged captors forced her to undress and pose for photographs.

She told detectives she was placed in a car, and was able to escape and flee into woods and came out near her home.

Detectives noted she had a minor injury in her lip, and a torn shirt. They also found $107 in cash tucked in her right sock.

“Out of respect for Carlee and her family, detectives did not press for additional information in this interview, and made plans to speak with her in detail after giving her time to rest,” Mr Derzis said.

Hoover Police Department chief Nicholas Derzis told WBRC that the department was relieved she had come home.

“The first thing is to give Carlee and family a little time to get themselves back together,” he told the local news site.

“I know it’s been a tough experience for them. When we think it’s time to sit down and have a conversation with Carlee and try to get some facts, we’ll do that.”

Up to 60 police officers had been working on the case, he added.

Early on Saturday evening (15 July), police were dispatched to the Red Roof Inn in Vestavia Hills after receiving reports of a sighting, AL.com reported.

There was no sign of Ms Russell by the time they arrived.

Then at 10.44pm, police received a 911 call to say Ms Russell had showed up at her home on foot.

She was reportedly in a state of shock.

Police and fire responded, and Ms Russell was taken to UAB Hospital where she was treated for unspecified injuries before being discharged.

While she was in hospital, detectives from Hoover Police Department took an initial statement from her.

Police said they were working to build a timeline Ms Russell’s movements after she was reported missing.

They didn’t provide any further details about the missing person investigation, leaving unanswered questions about whether they were seeking suspects, or the fate of the toddler that Ms Russell reported seeing.

“We rejoice with the Russell family as they continue to rest and recover from this situation and ask for their wishes to be respected regarding their privacy,” the police department said in a statement.

Local, state and federal law enforcement agencies joined family and friends in the frantic search.

Ms Russell was described as being 5’4” tall, and weighing 150-160 pounds. She was last seen wearing a black shirt, black pants and white Nike shoes.

Mr Lowe said police had received a single, vague, tip about a gray vehicle and a man with light complexion having been seen near the missing woman’s car.

Talitha Russell, the missing woman’s mother, later told AL.com the tip had come from a trucker.

“He saw a gray car with a tall brown-skinned man with khaki shorts on leaning over in the car,’’ Ms Russell told AL.com.

An anonymous donor put forward a $20,000 reward for her safe return, and CrimeStoppers put in an additional $5,000.

At a press conference on Wednesday, Hoover police revealed Ms Russell drove 600 yards (548m) along an Alabama interstate while on the phone to a 911 operator claiming that she was following a lost toddler.

Data from Ms Russell’s cellphone showed she had driven the length of six football fields while talking to police dispatch, Hoover Police Department chief Nicholas Derzis said during the press conference.

“To think that a toddler, barefoot, that could be three or four years old is going to travel six football fields without getting on the roadway, without crying ... it’s very hard for me to understand,” Mr Derzis said.

“Carlee’s 911 call remains the only report of a child on the interstate, despite numerous vehicles passing through the area at that time,” he said.

“We don’t see anyone on the interstate other than her car, and then someone getting out of her driver’s side.”

On Friday afternoon, authorities issued an urgent appeal for any information about her whereabouts.

“No piece of information is too small for this investigation,” public information officer Lt Daniel Lowe wrote in a statement.