Am I being baited with a passive aggressive comment?

Tl;Dr I can't tell if this is a normal comment someone would make or passive aggressive baiting to get me to argue.

We had a big argument three months ago and haven't been speaking much. She knows all my personal info up until that moment, and instead of trying to resolve the actual problem made a bunch of personal attacks trying to hurt me with what she thought would sting. It's a complicated situation to go into all of it, but basically a lot of little things that weren't addressed when they should have been hit the fan all at once.

About a year ago I had PTSD from mental abuse (someone else did that to me, not this person), and during that time I wasn't myself, and for a while I lost my ability to feel any and all emotions. Anger came back first. I was afraid because I wasn't myself so I isolated myself in my room unless I had to go to work and I'd put on an act to appear normal, going through the motions. Then sadness and dispair came back. About 8 months later I started feeling happiness again. I think this comment is referring to me confiding in her that all I could feel was anger and it was really scary to only be able to feel that. I think in her mind whenever she wants to be angry at me she still sees me as that person who can only feel anger. I DON'T like to argue, I was pushed to the point of melt down when we had our argument and I was stranded in the middle of nowhere and couldn't leave, I wasn't going to let the situation escalate without trying to stop it.

I don't know how to stop the antagonizing. Instead of talking about problems when she's upset with me she antagonizes me until we argue and then blames me for flaring up. Which solves nothing. I try to talk to her about her life and problems but she keeps everything inside until it's too damn late and it's all out war. I feel uncomfortable around her now, things didn't use to be like this.

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