When you say she’s dual diagnosis I presume your daughter has a mental health problem as well as an addiction- I would speak with her key worker or nurse and ask them for a visit. Also remove her stash, bin it! Ketamine should be class A, it’s a horrible drug not meant for human consumption especially when someone is taking other medications which I imagine your daughter is. She could easily overdose. Be strong and all the best it sounds like you have had a very rough few weeks and need some respite, is it possible she could be admitted to hospital fur a while so you could get some respite or is that not something you would want? Lou