My mother in law didn't like or approve of me for the most bizarre reasons. She was very "appropriate" and thought that looks and money was what mattered. I came from a broke ass, wrong side of the tracks family and she most definitely didn't approve.
So I can see why a mother wouldn't have wanted me to marry their son and rightly so, but not for the reasons SHE didn't approve! She didn't even know the truth of the matter.