Backstory: Ok, so I've been with this girl for a 6 months.... and she's 99% of the time absolutely amazing. She told me when we first started dating about some of her past trauma as a kid, and from her ex... I shut up and listened. Then a few months ago she opened up that she had been diagnosed when she was 21 (she's 28 now). 

--So anyways to the point, we spend most nights together without issues. She doesn't have crazy constant mood swings. She says she used to but has been doing better lately. It's just sometimes when we have a disagreement it's like her brain completely shuts off, she won't respond in a reasonable manner.. sometimes she'll just yell at me for trying to voice my concern. It makes communicating issues really hard. Especially when it's over somthing that she's in the wrong about. And then the next morning she'll wake up and usually apologize for being that way, and I'm instantly the best person on the face of the planet again.

I want to add that this is NOT the case for every argument, I know she is capable of communicating through real conflicts in an articulate manner... it's just sometimes i feel as though she chooses not to. My question is how should I address this, I want to cause the least amount of distress and not trigger her. I'm still new to this while situation, and I'm trying to be understanding, I LOVE this girl, like absolutely love her. If this is probobly something that's not worth addressing, and is just how things are probovly going to be I'm totally OK with working through her episodes, but if anyone has any advice it would much appreciated.