Is it weird that biologically I'm my mother's child but I barely look like her or have any of her traits?

My mother abused me physically as a kid and mentally as a pre teen all the way up to my age now (18) she would always say that I wasn't normal and she made mistakes with me because I was too nice and quiet to be her child. People also see a difference between us and they say I'm more easy to talk to rather than her. People say that they don't understand how I'm her child because I'm nothing like her. I barely look like her or any of her family members, but my little sister on the other hand looks, acts, and thinks just like my mother. My mother always said that she wouldn't make the same mistakes with her that she made with me...I just wanna know is it something wrong with me?? Why am I not like my mother or anybody on her side of the family for that matter??