Thank God your daughter is still with you and getting help.
Bias reveal: I still work as a behavioral health care provider.
We live in spectacularly trying times. Our upbringing and experience have prepared most of us for the typical challenges we encounter. Pandemic, violence, addiction, family disasters, losses. . .so many aspects of our lives are beyond our experience, and overwhelming. We use the life tools we are familiar with, and when those are insufficient, we don't know where to turn. Individuals and families that practice faith have an additional drawer of tools, which may still not solve some problems. There is another drawer of tools we can access. Clinics, doctors, nurses, therapy, medicine, inpatient treatment; these are options most of us consider in treating an illness, especially a life-threatening one.
My encouragement is to understand mental and behavioral health issues as medical issues, and to treat them with the same approaches. This crisis happened to all of your family. Each family member will have a role in healing from it, and may benefit from help in doing so. Find the help that best suits those in your circle. Include trusted faith advisors, most of those have some experience guiding you toward specialized mental health treatment resources. Use help to resist and overcome guilt and blame, those are obstacles to healing. Behavioral health professionals are trained and experienced in helping interrupted lives progress. Using help is not weakness, rather it is strength.
I join those posting here in wishing hope, healing and peace to you and each in your family. You deserve it, as do we all.