Anxiety about my kids sleeping at mils

I have a 4 month old and an 18 month old. I’ve had bad anxiety as it is since my 4 month old has been born. My mil wants to take them for a sleep over and I’m not ok with this

So we were on the phone with her and she says to my son, “grandma is taking you and your sister for a sleepover after all this is over”.

I’m in the us and I don’t see coronavirus being over anytime soon, so maybe my kids will be older, I just don’t know how much older.

I don’t like that she didn’t ask, she just told me she’s taking them.

My daughter is only 4 months old I can’t imagine her sleeping away anytime soon.

My 18 month old slept over once when he was 15 months old. That didn’t go well. She told me she was going to give him a bath. I told her thanks, but he doesn’t need a bath, he had one earlier and he has bad eczema, so two baths in one day is completely unnecessary. A half hour later she sent me a picture of him in the bathtub. I got pissed off and asked why she gave him another bath, and to please use lotion after. She said she wanted to because he was dirty. She was mad I questioned her, and stopped responding to my texts. I texted twice, just to see how it was going. I had never been away from him before, only when my daughter was born. Never got back to me. I tried FaceTime to say goodnight. She didn’t answer. So all night long I had no idea what was going on, and only one month postpartum and already an emotional mess. I didn’t hear from her until 11 the next morning.

I told my husband I’m not ok with the sleepovers. I don’t think babies need to have sleepovers, especially after the shit she pulled. He’s totally not on my side. In his family, it’s normal for grandparents to have the kids sleeover. In my family, we didn’t do sleepovers with grandparents, unless my parents were away.

I don’t know when the quarantine will be over, but I really am dreading this 😩😩😩😩😩