She (38) was diagnosed a year ago after becoming suicidal and starting to harm herself because voices told her to. She was in hospital for three weeks and diagnosed with 'cannabis induced psychosis' and advised off weed.

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Now, she's home in my father's house. She's extremely depressed and spends all day in bed. She doesn't contribute to anything in the house, cleaning, paying bills etc, she misses any doctor appointment because she will not get out of bed and my father has given up his whole life to look after her.

She sleeps all day and wakes up just to smoke cigarettes in bed. Often setting off the smoke alarm and doesn't shower. If you're talking to her she will just look over your shoulder and say 'i don't know.'

She doesn't want to go outside. She doesn't really talk, just mainly says I don't know to anything that is asked. On a few occasions she has gone out with friends/drug dealers and ended up buying drugs and ended up in hospital after falling from taking drugs.

Sometimes she buys weed and sits in her room and smokes all day.The house smelling of weed. I've asked the father to put the foot down.

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I really don't know. I've distanced myself from it, but watching my father destroyed and imprisoned by this is heartbreaking and I don't see it ending until my sister dies or my father dies of a stress-related heart attack.

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Sorry this is the wrong place to post, but does anyone have any advice?