I totally understand having troubles finding a place that will allow dogs.. muchless three of them. And I know.. they do tend to jump the baby gate.. just a thought. We use one at night to keep the dogs upstairs.. but otherwise, if we are downstairs and we lock them up there, Zeke will jump it.. A behaviorist might help.. just seems that all dogs are different. Jealousy might have played into it.. and Daisy seeing her as the weak one in the group..

Sounds like you're between a rock and a hard place.. shoot. I have my fingers crossed for no more dog fights in your household!