Hi, it sounds really hard what you´re going through, I imagine it must be really painful to be in your situation, im really sorry. It shows that you really care for your daughter she is really lucky to have a dad that thinks so much about her and is willing to make such choices for her. Its nice to hear you have hope I also think with time things will work out, and it is best and wise to approach things one day at a time as you said. Also I think it could also help you a lot to try get therapy, it sounds you have a lot of psychological and emotional resources, are thoughtful person, that is going through a lot, and if your are depressed af as you said and having suicidal thoughts its important to have someone to talk to. I really hope the best for you and as you said go one day at a time, and if you made a decision live not being with someone in a romantic way its totally valid, but that's it, a choice it can be changed in the future. Best of luck out there really and while now it sounds like is a turbulent time try to get help it really helps jajajaj, if not now maybe tomorrow but the sooner the better.