I wouldn’t call her mentally a 12 year old - the initial article said she drives and was taking college classes. A lot of people with higher functioning ASD are intellectually beyond their years but struggle with understanding people’s intentions and in stressful situations. I have a cousin around this age who has a similar diagnosis and, I’m assuming, functioning level to SGV. You’d never know he was on the autism spectrum unless he’s frustrated or stressed - he’s just a smart, quiet kid that can sometimes come off a bit naive in complicated social situations but absolutely has the majority of situational know-how that most college students have. If SGV is petitioning for emancipation and has retained an attorney, based on what’s been described of her and sleuthing her social media a bit I would assume that there’s something going on at home that might not be ideal that she’s trying to get out of. FWIW the find SGV group had a lot of heavy religious undertones in some of the posts and there was evidence on her own social media that SGV could be LGBTQ. That there is a red flag IMO.