Am I being ridiculous?

My MIL wants our 2 year old daughter to sleep over next Saturday night. I love my MIL and so does my daughter. She used to sleep there like once a month before Covid so my husband and I could have a night. We’ve seen her and her husband (she’s remarried) plenty of times since Covid so it’s not that that I am worried about. It’s the damn sleeping arrangements. My daughter still sleeps in her crib and only naps in a pack n play when she’s at my mom’s. She hasn’t tried a “big bed” yet and we never bed shared. I’m worried she’s too big to sleep in a pack n play all night and everyone is going to get a bad night sleep. I could be so wrong though and overthinking it. Should I just let her sleep there or tell them to wait until she’s in a big girl bed?

I’m probably being ridiculous, but I’m 5 months pregnant and so emotional/overthinking things.