OP I have only ever read and been adamant I'd never join MN but for you, I have done it 🫣
There are a lot of people on here who have not experienced the level of trauma that you have been through and will never be able to comprehend.
When you read the comments that are full of judgment and blame, I want you to remember that they could not walk a single chapter in your shoes, let alone all of it, healing from breaking cycles and still be here fighting & being the best mamma you can be.
I have been through a lot of experiences similar to yours; neglect, abuse, real solo parenting with no support system, children with complex mh that involves SH, rebellion, schools, social workers and all the work these types of situations create.
If I could hug you now I would but instead, I am going to offer my advice…
You say she isn't ND but as an AuDHD female with 3 ND kids, I would put money on that she is. I would look into PDA (under the ASD umbrella) & ADHD specifically in females.
I think your plan of supporting social care & GP are good call.
I would also ask social care or CAMHS to sign up for either a Neurodiversity Coach or mentorship program as well as ADHD & Autism assessment. PDA is about anxiety-driven control but unfortunately, if we don't know why we are the way we are or how to meet our needs then the symptomatic behaviours manifest negatively & dangerously leading to risk of harm whether that is intentional or subconsciously.
It does sound like she wants to be in control of her life but is just going about it in all the wrong ways.
3 years ago my eldest was at the peak of this and the only options I saw for our future were either me in a grave or them. I'd done everything I could, they had 6 social workers, I was 3 years in hoop jumping with education, CAMHS, dealing with police when they went missing and clawing money together for private psych assessments because I was terrified of where it was leading. Nothing worked until another social care team was called in and the main social worker from that team had one talk with them & it just hit in all the right places helping them understand how their brain worked and things that they could do to make their brain work for them. It was gradual & took time but their life is transformed now and that's the kid that I worry the least about now 🙈
I know you have also said you have money concerns, have you considered applying for DLA for your younger child? It is a needs based benefit rather than diagnosis. It might help with sensory equipment, travel expenses for appointments, safes for sharps & meds other extras that come with different needs.
Our life is not all breezy, there are glitches and obstacles but it nothing like it was so don't give up!