MIL driving me insane

Need some advice. Sorry for the rant! MIL is saying she wants to arrange their friends meeting our 7 month old son. Some context we are staying with them temporarily until our house is finished And she has been constant with doing things with our son that I’m not happy with and trying to control things with me and him. For eg I want our son to be able to entertain himself with his toys and not rely on someone doing it for him, which we have told her 10000x but she continuously stands in front of his high chair trying to entertain him? Another thing was I was rushing to take him for his nap as it was already delayed and she told me to come over for two minutes to say hi to her family on FaceTime with our son, knowing I was already rushing upstairs! The obligation she is putting on me as if I owe her because we are staying there. Anyway it’s flu season and I honestly don’t want him meeting people if I can avoid it especially because he has his routine and I hate putting him out of it for others to meet him etc. How do I say this to her nicely? Because I’m at the end of my tether with her that I’m eventually going to say something rude. 😫xx