Welcome! Sounds like you are doing all the right work to make your little girl part of your family. Poor Eski - is he trying to teach her some manners or just hiding out?
Our 2 B's were rescues, too, the second one abandoned in the desert "so he could be wild" (according to the owners that the shelter located via his microchip). Crazy! Who knows why, but we're thrilled that our two found their way to us.