I was sexually abused for years during my childhood but, unlike a lot of you, I started off fighting it, resisting, and was an assertive kid in many ways. I used to stand up for my older sister to my parents when I thought they were treating her poorly. I got broken down by years of abuse by my psychopath brother.
So, I don't know if there's a connection between abuse and submissiveness, but if there is, I think that's my story.