Is your daughter in law living with you? I used to be severely allergic to cats, but the more exposure I had, the less reactive I became. I don't even get stuffy anymore when I go into a house that has cats. I still can't pet them and rub my eyes without my eyes getting red, but that's pretty easy to avoid. My allergy went away in my mid to late 20s, so maybe there's hope. you certainly don't want to keep the baby in a sterile environment, that's a good way to encourage allergies. My friends did that with their kids, and those kids are allergic to EVERYTHING now because their immune system never grew to deal with such things. I say get one Austin Air for the main living area, keep the cats out of the daughter in laws bedroom if she lives with you, and if she's bothered by cats in the bedroom she can pick up a Rabbit Air on her own dime.