Found my Sister’s diary

Trigger warning: SA, ED, suicidal thoughts

So… my mom found my sister’s diary and there is only one page from May 3rd; the rest are rolled out. And basically it talks about how she thinks she has nothing left for her here, no interests, no friends, etc. It also talks about an eating disorder, self sabotaging, SA, and just overall how she doesn’t want to be here anymore.

My mom and I have talked about it and we just are unsure what to do next. She has been diagnosed with major depression and generalized anxiety and was on medication and started therapy but stopped because she did not like the therapist.

We obviously need to talk to her about it but are really just unsure how to approach this and how to intervene properly.