39 weeks and MIL staying with us.... 😫

(sorry for long post!!) FTM-I am completely stressed. My mother in law from out of town is now staying with us till- ??? (btw-how do I ask EXACTLY what day she's leaving without being rude??) it was about me being comfortable till our baby comes, and staying comfortable and now I am stressed out instead. She has a cute little dog but my border collie puppy has never been around other dogs in our house, and is chasing her around barking. We're constantly yelling at my poor confused dog. That's not the worse part but it's extra stress not needed. She's a smoker (so is my husband) and they smoke outside obviously but when my baby is here I don't want smokers hands all over him. It's bad enough to make my hubby sanitize his hands every time before touching our lil one, but now demand that of her, too? I hate being the bitchy, demanding one but now nothing is going my way. I can't stand house guests, and MIL's are the worst ones! Don't get me wrong, I love her but this is NOT what this soon to be new mama needs! 😞 My hubby asks me what's wrong but I can't tell him b/c he'll think I am being unreasonable and he's such a mamas boy. Even told me a few weeks back that he never got the attention he deserved from her (he has several brothers) growing up, so now he's gonna make up for it??? Ahhhhh!!! What am I to do, just sit and wait for this madness to be over? I feel I have no say in any of it, except when it's time to go to the hospital I know I'll be telling like I feel-only he comes with-don't want her there. Instead I'll worry about her being in my home with the dogs, and what I have to return to... 😩