Uncle to niece isn't so bad BUT if you have managed to start something you didn't want (!!) why not get her in asap for a gravid spay. That done, you won't have to worry about this happening, again.
ps It is possible to get through a season without a oops mating. We kept males and females under the same roof, but never had an unplanned litter. If they did mate without somebody being right there, you were perhaps lucky neither was injured. Bassets aren't the easiest breed to mate much as there are some who will help themselves.
ps It is possible to get through a season without a oops mating. We kept males and females under the same roof, but never had an unplanned litter. If they did mate without somebody being right there, you were perhaps lucky neither was injured. Bassets aren't the easiest breed to mate much as there are some who will help themselves.