World3 min(s) read
Published 09:48 10 Jun 2026 GMT
Family welcomed a '12-year-old girl' into their home for 14 months before learning she was 37
There’s appearing mature for your age, and then there’s posing as a 12-year-old girl, as a 37-year-old — which is what con woman, Amanda Matia Souza de Oliveira, did to an unsuspecting family, according to Brazilian authorities.
Oliveira posed as a young, vulnerable abuse victim seeking adoption from a family in Brazil. Claiming to be an autistic girl named Gabrielle, the 37-year-old’s masquerade fooled an unfortunate Brazilian family, who were lured into the trap.
To appear even more credible, the fraudster went to the lengths of drinking from a baby bottle and using a pacifier to sell the pretense to an unfortunate Santa Catarina family, who doted over her for an entire 14 months.
Family left devastated by fraud
Speaking to regional outlet Jornal Ipanema, a devastated family member said: “I was deceived by a woman who claimed to be a 12-year-old. I gave her affection, love, and food. There was no way I could suspect anything,” they added.
Having pleaded with the local congregation, the audacious conwoman was put in contact with a local family, who took her in and raised her as one of their own, but unbeknownst to them, they were really housing a grown woman.
After 14 months, Oliveira managed to convince the family to adopt her, taking advantage of their kindness and sympathy, and even got them to pay for her medications and plan her 12th birthday party.
While her real age was revealed by her appearance, her backstory was given with such conviction that the unfortunate family fell for her manipulation.
According to authorities and the family, Oliviera claimed that she looked older due to the abuse she had been a victim of.
The woman's elaborate story
Despite her assuredness, the scheme that organized her adoption began to grow suspicious, and they eventually discovered that she was actually a 37-year-old woman who had pulled off near-identical cons in approximately seven states in the country.
Following her arrest last Wednesday, the woman admitted her involvement in the scheme and told investigators she had carried out similar scams targeting families across at least seven states in Brazil, according to reports.
After her actions came to light, a volunteer in Rio de Janeiro revealed that the woman, identified as Oliveira, had contacted her on social media in 2023 with disturbing claims.
She alleged that her father had forced her into prostitution, practiced witchcraft, and that she urgently needed help.
When Oliveira later met the volunteer in person, she reportedly presented herself as an overweight, autistic teenager and spoke in a childlike manner.
Suspicion grew, however, when volunteers noticed needles protruding from beneath her skin, prompting them to arrange medical imaging.
The scan revealed a shocking detail — Oliveira had more than 200 needles embedded in her body. Investigators believe she inserted them herself to make her abuse claims appear more believable.
Recalling the moment, a volunteer said: “The doctor looked shocked and told us he had worked in the field for years and had never seen anything like it.”
After the discovery, Oliveira fled Rio and continued repeating the scheme in other regions.
In each case, she allegedly posed as a vulnerable child escaping abuse, trafficking, or even religious cults, using false identities, fabricated stories, and childlike behavior to gain sympathy and secure housing and financial support from families, churches, and social workers.















