MIL and newborn issues

Hey ladies, i love my mother in law. She is such a sweet lady but she doesnt really understand boundaries. I am being induced next week and my mother in law offered to come do "night shift" every night for my newborn so my husband and i can sleep. I thanked her for her offer to help but told her i plan to strictly breastfeed my baby if it goes as planned. I have GD and its what is best to regulate both my sons blood sugar and mine. I also will have my husband home with me for 5 weeks so he can get up to change diapers and i can get up to feed and we can take turns and get in to our routine. She then went off on me and said its selfish and i need to make sure my baby takes a bottle so my husband and other people can feed and bond with my baby too.... ladies how do i deal with this situation without pissing off my MIL?