Buy her some of her favorite wine and offer to keep a couple shelves available. Once she accepts, then just pull the wine out and throw them in a box somewhere. If she asks, then save it's broke and you're looking into getting it repaired. If she asks again later on, say it won't keep her wine cold enough so you're just going to use it as a humidor.
I don't swear by these remarks, but doesn't it sound like it would work?