Maybe when she stays with you she can smoke outside while wearing a coat, then leave coat on a hook outside or in a garage? Wash her hands when she comes in and maybe brush her teeth as well.
The first two weeks with your baby and getting to share that time with your mom will be worth the extra effort on her part and understanding on yours.
With your father's recent passing, I would try and include her as much as possible. Nothing can motivate people like a baby, if she was looking for a reason to quit.
And I am an anti smoking person for what it's worth.
That might be the best post I've ever seen of yours.
And CalvertNewbie, I'm impressed that you admitted you might be overreacting. I don't think I've ever seen anyone do that on here, no matter how much they *were* overreacting. Anyway, good luck - I'm sure it will work out fine. And congrats on your future new baby!