SiL with Bipolar and housing following an incident

[whereshouldshelive]

Have NC for this, but have been posting on MN for about five years now.
DH has a younger sister (47) who has been diagnosed with this for years.
She regularly gets sectioned because she stops taking her tablets. She lives alone in a supported flat as FiL got married a couple of years ago and she is very jealous of his new wife. Both are in their 80s.
DH was told yesterday that she'd drank drain cleaner and was on a general ward of the local hospital 180 miles away.
FiL has not been to visit her, which astonishes me and DH. Since it's so corrosive, and presumably she's done some damage, DH is going to go to see her today. FiL has completely disengaged from her.
Our concern is about her housing. She lives in a self contained flat which is supplied by either a charity or HA, there is a support worker on site.
As this is not the first time she has tried to self harm, we are worried about whether she should be somewhere more supervised.
Do such places exist?

Anyone?

Should have asked. Who would arrange the move if there is to be one? She is completely unmotivated and, as I said, FiL has not been to see her. DH is not really able to do anything because of the physical miles between us.
Would the ward staff refer her to the social services? or would DH have to make the first move as it were?

Suggest you ring Rethink helpline for specialist advice. They also offer a siblings group which are fab for support.