Is NOBODY wrong in the post ? POST : This is a long one so im sorry for the read.

We were hanging out at her apartment and she was playing a game ive already beaten. She slept more than me last night so I was still pretty sleepy this morning and she suggested I go sleep. I wanted to spend time with her so I refused but at the same time she had just showered and was naked and had a cover on her but regardless I was turned on. This is important because while i didnt really want to bother her my boner started bothering me, so i went to the bedroom to deal with it. 

We had previously discussed in our relationship that porn was ok as long as it didnt mean anything and you were trying to bust a nut (she doesnt watch it because she says im the only thing she needs to think about but she has masturbated before to deal with her horniness without telling me as well and i was ok with it). So i started going at it and ironically she walked in as soon as i started and i was startled but ultimately just sat there and chatted with her as she walked across the room and got her phone charger and then left. I asked her if she wanted to help or join and she declined and seemed chill about it. So i finished and then waited a couple minutes so i could pee and then went back to where she was playing games. She was now watching netflix and as soon as i walked in she asked if i was done and i said yeah. 

She immediately turned everything off and rushed to the bedroom saying “cool, cause i want to take a nap” but again she got more sleep than me so i got confused and asked her if she was ok and she said yes but her tone and attitude was different from before and she said she wanted to be alone. Now i knew something was up and i followed her to the room to watch her cover up and put the cover over her head and slowly start crying. 

When this happened i immediately sat on the bed and tried to ask her what was wrong and she refused ti talk to me and when i kept asking she got up and locked herself in the bathroom for awhile. When she came out she got back in bed and was just quiet and still is as I type this.

So, i know that she probably was upset at the whole masturbating thing and how that can make someone feel unwanted but in past arguments we have had she gets enraged when I assume how she feels, but she refuses to tell me how she feels. The only reason this is ok is because shes had a rough past and is bad at and is recovering from trust issues and communication issues. But regardless, its hard for me to communicate and try to understand her when she locks me out and pushes me away and i dont know what to do, id leave her alone but the last time i did that she develops her own negative emotions and builds up walls around her so she can’t get hurt again. 

So AITA and how do i help her because i love her and want her to be happy 