Inlaw trouble!! Can the relationship survive?

My boyfriend & I had a baby almost two years ago. I used to get along with his mother very well until she found out I was pregnant, ever since then she and I don’t talk. I have never seen a mother act jealous like an ex girl-friend but she does, and has done some really childish things like turn a picture (of the baby and I) so it was facing the wall things like this… My question is can a relationship survive and even a couple get married when there is this kind of relationship issue?