I'll tell you what I think although this is not from research, just my opinion. I've always thought the does leave their bucks when they are a year old, when she has her next offspring. So they will be relocated by the next hunting(breeding) season. As far as killing the doe, I think the result will be the bucks staying close by. Imbreeding won't be a problem because her mother is probably dead, she will be dead, and she didn't have and females last year obviously. The reason the bucks leave is because she beats the heck out of 'em with that left/right hoof combination and chases them away all the time. Without that pressure they'll probably stay unless food is an issue.