That's your perogative of course, but in my opinion it is sort of an odd boundary. The fact is that you don't have any idea what they have done or haven't. And no matter what you say to her, if she hasn't done that yet there is no way she will tell you if she does, unless it is just to make you give up.

The less you know the better. Don't dwell on the details, and for heaven's sake don't ask!