Today I came home and smelled alcohol on our nanny's breath. This is not the first time I've thought I could detect something but today I was able to confirm when she left the room that she definitely had vodka in her Mountain Dew. I don't know when she drank it, though my wife and I don't know any reason it would be okay. We will be confronting her on Sunday (Mother's Day).
Question: Is there any justifiable reason we shouldn't fire her on the spot?
Our daughter is four months old. Our nanny has worked for us less than a month and does a fantastic job for us. She is a live-in.