2 beagle dogs

I have 2 beagle dogs, 1of which I rescued. They got along when I got Bella, but now Bexley bullies her. They have started to get along, but about 2 hrs into play Bexley pins Bella down & it ends up in a fight. I don’t want to have to rehome Bella as we are her 5th home, not due to anything she...