Problems with MIL

Hi all, how do you all deal with problematic MILs? In summary, we moved out 2.5 yrs ago due to a quarrel she had with her son, but blamed me for not supporting her and even called me names. It was a torturous 3 months before I packed my luggage and moved out on a sour note with my husband. Currently, I'm pregnant and my FIL is aware(definitely will tell her). I'm just thinking about the future, i don't ever wanna see her but what if they want to see the baby? Should i allow? God knows what she will do to the baby? My husband is not on talking terms with her too. Even though 2.5 yrs have passed, my hatred towards her is still strong. Sigh.