I'm so sorry, that has got to be incredibly difficult. I can't imagine going through that with my child.

It sounds like perhaps this isn't something that you've dealt with before, but it is important to know more than 1/3 of women have been diagnosed with depression in their lifetime, and about 20% of men.

Right now she needs to feel loved, and you should work to find a psychiatrist (which again — a very large chunk of people will need at some point in their lives), and work on getting a medication that can help her.

I don't know your daughter, but I've dealt with very serious mental health issues with loved ones, and I can't say enough how important it is to make them feel comfortable talking about what they are going through. We have come a long way as a society but we have a stigma about talking about our mental health issues.

Unless she is actively planning a suicide, I don't think it would be wise to make drastic changes in her life, because suicidal ideation is a common thing to deal with when dealing with depression. However, I would talk with a psychiatrist first about medication and they will probably recommend a therapist that may be able to give you a good course of action.