I don't know what to do.
My sister lives with my elderly mother, and my sister cannot be trusted to manage her medication.
She takes a quarter of a months supply in one day because she ran out, and still self harms, and hears voices and never stops talking about them but does nothing to deal with them.
I'm scared of her, and I just want her to go away and leave my mum in peace.
But I'm scared to do anything because I don't know what she'll do to my mum or me.
What can I do to save my mum in this situation?