She called him a nigger lover

My boyfriends mom called him a nigger lover and said go live with that nigger I am black and we have a daughter together his mom has always had issues with me no matter what I’ve done and now I know why it just hurts my feelings that I’m being judged by the color of my skin I’ve never dealt with this before and my heart hurts for my daughter because that’s her grandmother. What would you ladies do in this situation? She acts like she absolutely adores my daughter but my daughter is literally 50 percent black My daughter is mixed but her skin color is still white she’s only 4 months old has me thinking if she would feel differently if my daughters skin color was darker because the first thing she commented when she was born was how ghost white she was I’m just so torn on what to do