mollie I can imagine that the mother of the lady with the drug issues has had to back off to survive.
She is now looking after two young children. She may be elderly and not receiving any significant finacial support.
She could have had years of trying to support her DD and has had enough and is concentrating on looking after the girls.
Perhaps? I dont know.
The lady in the flat said she had not spoken to her dad for years. She seems very alone dosent she?