I need help with my autistic NEET daughter whos 18.

We live in the UK and recently, she has just left college, she was doing a health and social care level two course which wasnt really something she wanted, she loves cars and wanted to do mechanics but the course was full, before that, she wanted to do A levels in sociolody, politics and environmental science but she unfortunately didnt have the maths GSCE for it so she couldnt do it, this really affected her as she did study for her GSCES.

She also tried learning how to drive as shes always wanted her own car but she really lacked self confidence and the instructor said she really struggled and recommended she do automatic, she had a huge , hours long break down at this and was very very upset and she was telling me how worthless she is.

it really destroyed her confidence and now she wont even try to learn how to drive again, it affects her more because she loves cars and having a car would mean she would be able to take part in car culture.

She doesnt have any friends and shes very nervous, ive tried to tell her to volunteer but she refuses, she doesnt really do much, she mostly sits in her room on her laptop, she also has a very unhealthy fixation on school shooters and people like that and really loves them, , i told her college about it and her college gave her a youth worker through childrens services but this stopped because she turned 18.

Shes very nervous to the point where she wont look at people, she is very unsociable unless it comes to her interests and then she wont stop talking about them, people who know me and her always tells me that she always crosses the street to get away from people and always runs away from people because shes scared someone in public will harm her.

She hates being perceived to the point where even if im in the same room as her, she will get very defensive and ask me why im there. She doesnt even like it when she goes inside the car and a neighbour is outside or when shes trying to open the door and other people are there, she gets extremely scared that people are looking to make fun of her.

The youth worker tried referring her to prevent but prevent said she was just interested in them and wasnt radicalized and closed the case. I know for a fact that this isnt true, she supports what they did, when the Thai school shooting came on the news, she was excited and smiling about it and saying in public " omg the shooting in Thailand!". She has also recently been banned on facebook for that content and has an onezelig doll which is what the San Diego shooter had that she brought because of him and she brings it everywhere.

Shes never known what shes wanted to do even when she was in secondary school, she has very low self esteem and believes that people are always making fun of her and rejecting her , and she believes she will get rejected if she does anything so she doesnt bother. She told me she feels very hopeless and like there isnt a point on anything.

I dont know what to do, because shes now 18 and an adult, she has to consent to getting mental health treatment and we have had battles with that in the past, shes had CAMHS involvement before but they wernt very good and she was in a pupil referral unit due to poor mental health until she left school.

Ive also tried to tell her to join some autism groups but she also refuses to go to any groups. Im at a loss of what to do.