I thought I should give an update on the little ones. I've been out of the Internet loop for a while. Unfortunately, it does seem like it was the mother in the story below. I haven't seen her around (but deer can be shy, so there is still a chance). On the bright side, however, the babies are doing great! I think they were right at the weaning age. They are grazing and seem to be doing fine (though our flowers aren't). I've been keeping a close eye on them.
Animals amaze me, by the way! A human child would be so helpless at four months- even if you translate their age from "deer years" to "human years!" It's impressive.