My mom hides food away while I nurse and have appetite

My Mom arrived for baby’s baptism (only for a few days! It’ll be fine but I’m losing my mind for now) and is upset that I’m not losing pregnancy weight and that it’s not my priority while I nurse. She and my MiL took over the kitchen because we have guests, and my mom keeps finding ways to limit my food, i.e. purposefully serves a meal while I nurse (so it’s almost gone when I’m back) or shames me for my weight which makes me subconsciously limit my meals when we eat as a group. It’s 11pm and I finally have dinner without feeling that she will try to intereupt. My husband supports me as best as he can and got me a stash of snacks for the bedroom but I just want warm meals (and a dessert which she served while I was gone and was gone).