Hello fjmcleod, welcome to Psych Central.

It does often seem to be the case that Mother will dislike whoever takes her little boy away. As a Mother myself, I can see where her feelings are coming from, she feels hurt that you married behind her back and an older women - a gold digger, as she puts it. Your Dad seems quite laid back and knows what your Mother is like. So.... breathe! In time I think your Mother will see your reasons for the quick marriage and see that it is true love. Be calm, try not to enter into the drama.