Social services involved with SS GF pregnancy from start, any advice?

[PurpleFadesToGreen]

So my concern in the title really.

I have a 20 yo Sson.
His GF is the same age and is newly pregnant.

She is quite volatile, my Sson has scars from her attacks.

Anyway, social services have been brought in by the hospital due to GF mental health and volatile history.

She has a fairly chaotic home life that I know of, frequent arguments with her Sfather, which result in her being kicked out/leaving home and moving in with Sson.
And then the same again in reverse with Sson.

Police have been called to Sson's by others when she has attacked him, a couple of times at least that I'm aware of.

I'm wondering what is the likely outcome or anything really regarding SS and this baby.

I've told him he is absolute idiot in not using contraceptives.
And bringing a baby in to this situation is far from ideal.

I just want to have realistic expectations, as we've never been in this situation before or had a dealings with SS.

Thanks

Well I guess he needs to think about whether he's prepare to be a single father if SS decide she isn't stable enough to raise a child safely. Is he?

We had a version of this in my extended family. SS were heavily involved. With family support, my male relative eventually had the strength to split from his abusive partner, and has full custody of the children. In the interim it was decided that the mother could never be alone with the children, so family stepped in when my relative was at work. However it took years (there's more than one child involved), so be prepared for the long haul.

Honestly, no I don't think either of them are capable enough.
Sson lives in flat share with another young lad , so a child wouldn't be able to live there.

It's a total shit show.