The international search intensifies for the 32-year-old from the Whitsundays, whose two-year-old daughter Adelynn was found abandoned at a local church in Cancun.
The toddler was found shoeless and without either of her parents, but was reunited with her family in Mexico today.
The little girl has also been given an Australian emergency passport.
Ms Shanks’ brother Daniel Shanks said yesterday the family is not confident they will find the missing mother.
“We’re doing our best to keep it together, but it’s quite difficult at the moment,” he said.
“I’m not confident in finding Tahnee to be honest.”
The Shanks family is offering a $5,000 reward to anyone with information about her whereabouts.
The family released a statement tonight confirming that Adelynn has been reunited with her uncle and grandmother and thanked “kind and generous people from all over the world” for their support.
“Our immediate goal is to get Addy, her uncle and grandmother home safely as soon as possible. With various hurdles and red tape, this may take some time,” the statement said.
“We remain deeply concerned for the safety and whereabouts of Adelynn’s mother Tahnee.”
Ms. Shanks was living in Mexico with her partner and Adelynn’s father, Jorge Aguirre Estudillo, and was vacationing in the south of the country when she disappeared.
Her brother confirmed that his sister’s relationship with Estudillo was beginning to deteriorate, and Shanks is considering returning to Australia.
Witnesses say they believe it was Estudillo who left the young child in the church.
“We’ve got three eyewitnesses telling us that, to verify it was him. And Tahnee’s the one who’s missing,” Mr. Shanks said.
“And he’s on the run, as far as we’re concerned.”
Shanks said he was initially approached by his sister’s concerned ex-boyfriend after the young mother went silent on social media.
Nothing has been heard from her since Sunday.
Mexican police have received CCTV footage of the car the family used to leave their home.
“We know they went to Tahnee’s residence … went in and searched the place, got CCTV footage of the vehicle moving away,” Shanks said.
He added that the car the family had been driving was recently found dumped in Cancun, two hours from their travel destination in Tulum.
Estudillo is wanted for questioning, but has not been found by authorities.
Mexican authorities have reported missing persons, while police in Australia have confirmed they are doing what they can.
“When it comes to someone who should be in Queensland, or who should come back, we’ll be involved to find out what’s going on and get answers for that family,” said Queensland Police Commissioner Katarina Carroll .