I have literally stood on the roof of a building, ready to jump. It is brutal and I’m praying for you and your daughter.
Depending on the severity of her depression, I’d potentially consider in-patient therapy. It wouldn’t be fun, but at the end of the day, it’s better than losing them. Therapists are very hit/miss, because it’s super important to feel like you can connect with them, so I don’t have any referrals, but I know the therapy unit at Utah Valley Hospital in Provo is really good.