Is it normal for gf to set my stuff on fire?

So... Where do I even begin... We woke up we'd morning and her feet hurt so I gave her a foot massage before she even got out of bed and then went to get us both breakfast from Denny's. Started eating right when I got home because I hadn't eaten the night before and she was still whining in the room about her feet wanting me to fawn over her. Lol I kept eating. She comes out all huffy and sits down and askew me to get her the oj. I do. Then sit down and keep stuffing my face lol. Then she asks for a cup. Grudgingly, this time, I get up and get it and set it a bit harder than I should have on the table. I sit back down and keep eating. She calls me a pig and throws the fruit salad I gt her at me and it hits the wall right behind my head. The.n She throws her pancakes in the container right in my face when she sees that her first attempt didn't get a rise from me. Even then I hold my shit. The. She up ends a gallon of water over me and my food because I'm still ignoring her temper tantrum. I slipped a bit here. I took the jug and did the same to her and she tried to push away and toppled the stool over into the table and hit her back on it. Then I told her I wanted to go home because she was being a bitch and started loading my stuff into the car. I came back in to a pile of my most precious, irreplaceable things burning on her propane range and more smoking in the sink she had already burned. They were journals of events, poems, stories, songs, drawings, things I'd kept since I was like 10. And a blanket my birth mother had given to me before she put me up for adoption. I just lost it. I saw red. And lunged at her. I wasn't going to hit her, but she was afraid and she drove her knee into my ribs breaking two of them, THEN I hit her open handed twice. And smashed her 50 inch plasma and then her phone when she was calling her friends to come kill me. I totally lost control. I've never done anything like this before. Ever. I'm not a violent person, or didn't think I was... It was the malice and apathy she held, someone I trusted and loved so implicitly destroyed the things she knew meant more to me than anything in the world. I regret striking her, even though she started it all. I regret breaking things that had no sentimental meaning to her. I should have gone for her grandmas rosary and her mothers wedding dress. No cops ever came and we tried to work it all out. I gave her my phone and my 65in Vizio. Then last night she comes face to face with something I never wanted her to see. I'm bisexual and we have an open relationship as far as guys are concerned for me, and she showed up when I had one of my friends over that she knew I hooked up with, and we had earlier in the day. I told her straight up what was going on after she pounded on the door for 20 min screaming. She knows what i do, but seeing it, especially after all we are going through, is just salt in an open wound. I'm trying to be patient and understanding, but she was supposed to bring my phone back last night and called me a 'fucking faggot' instead. Idk what to do about any of this. It just seems like way way too much to fix. I couldn't trust her even if I wanted to. I'm never gonna be able to leave any of my things around her. And she is probably scarred by me putting my hands on her regardless of who started it, it's still traumatic. And I feel awful. She has all kinds of mental problems she takes meds for, which is why I try to ignore most of the shit she does. I just lost my shit this time totally, and this whole incident that happend last night is just a huge subterfuge we don't need. So should I run for the hills, or stay and try to fix things?