Do other nparents accuse of faking fear?

A question but warnings for physical abuse

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My nmom was physically abusive to me when I was little (about 3-7) and stopped for a while. It still had a fearful effect on me all of these years (I'm 18 now), especially when she gets mad. Recently she's started it back up once I started therapy and is threatening it in a more violent matter.

When she's mad and yelling or anything of the sort, she'll notice if I seem afraid or flinch and she'll get even madder, saying that I'm faking it because she'd "never hit" me. Most of the time she'll even start making fun of me for my "terrible acting".

She'll do it for any other responses I get from her. When we were moving last summer she took out a surprising amount of anger on me and it scared and stressed me out so much that I ended up going to the bathroom a bunch for bladder problems. I vividly remember her yelling from the other side of the door to "stop faking being scared". I just want to know if this is normal for nparents