Am I wrong?

My MIL and SIL are on a cruise to the Dominican Republic right now. Both of them are immune compromised. My MIL just messaged me telling me she’s getting sick. They come back Sunday and want to see my girls (3 and 8 weeks old) am I wrong for not wanting them around them for a little bit after the cruise? Especially the baby? She hasn’t had her first round of vaccinations yet and it scares me. Especially with this crazy ass Coronavirus. I’m aware there are no vaccinations for that and it’s more likely she has the flue but it still freaks me out.