if this has been going on 4 a year im sorry but id of got shot of her a long time ago,im a smoker with kids i dont smoke in my house with them i certainly wouldnt tolerate a sitter doin this.find your self some one else who respects your wishes for your child.
I am a nanny and this shouldn't be going on. The childs health is so much more important. I love "my children" that if i smoked i wouldn't at work. Bottom line!I would fire her right away. If she does that against your request what else is she doing?