Mother-in-Law Issues...?

His mother hates me, but we're married and she still doesn't know. She won't even talk to me. I'm Native American and he's Korean. Not to mention he's the only male in his family; and his mother is super protective... My mom's side of the family loves and accepts him, but my dad's side is very insular and doesn't take too well to non-Natives. But they at least speak to him. She won't even speak to me... What should I do?