I know people are telling you to re home her, but wouldn't it make more sense to keep her and rehome the others? Afterall, you know her temperment and personality and can probably control her if she's alone...Can the "new owners "guarantee that? I wouldn't want to take the chance of the 'new owners" putting up with a dog with issues and find out they put her to sleep...! I'm sure you still love her, it could be an imbalance of hormones or something...Hope you find your answer...