Relationship situation advice / insight

Me (29f) and my gf (29f) are together since almost a year. Tbh the relationship was quite a up and down from the beginning in a lot of different senses. She is in a heavy depressive episode which she entered pretty much at the beginning of the relationship.

To get to the point, when I bring up that something hurts me, even if i don't expect that she changes something, she gets hurt in return and finally i need to apologize. She often tells me then that i start disputes, even when i brought up her posts she still had online when we were already a couple while posting nothing with me. Things seemed to get better and i raised that she hurt me with something after she pressured me to open up. She got defensive, and shut me down. Doubling down that lately she knew she loved me but finally now can also feel how much she loves me. This got me the wrong way, since I did feel something was off and she reassured me she loved me the whole time. I reacted hurt and shut down emotionally, which actually escalated the situation a lot. Finally she blamed me for not sleeping enough for her work the next day and even slaped me this morning. What do you think about the situation?