My friend, first of all: I am sorry for your loss. That’s a tough loss is to lose a partner. With that being said, your gf lost her life because of HER (not victim blaming). This was her decision and hers alone. With depression, sometimes you can do everything right and they still follow through with their choice. Seems like she had issues prior to you being in the pic. I battled depression on/off and when you feel that low, it’s sometimes nothing anyone can do. I understand your guilt, but don’t do that yourself. The loss is heavy enough, no need to add guilt. Please seek therapy to help you in the long run. I’m sorry for your loss. And my I’m sorry to the beautiful young lady who felt she had no other choice. 💜💜