My girlfriend with depression

My girlfriend with depression stopped talking to me, our relationship was insanely strong and we were online dating but we face timed a lot and called a shit ton. It makes me sad because I still love her I just need closure for why it happened. She just randomly stopped speaking to me one day after she said she was going to visit her therapist and since then I haven’t heard from her. I guess depression was hitting her heavy, I don’t have depression but I do have severe anxiety so I guess we kinda had our own demons to deal with but I still want answers, please help.