Jada is real dominant. I did some research on how to introduce dogs before Ebony came home. It went fine with my three the first night Ebony was here. The next day was not so good. Jada attacked Ebony it was bad! I thought she was going to kill her. I had to carry a squirt bottle around with me for a week. Jada hated being squirted. I could tell by Jada's body language when she was going to go after Ebony. It finally did calm down around here, they all get along now. We do the same thing as Orangutango we pet Jada first, give her treats first. Also, Ebony is crate trained so that helped a lot. I wish you all the luck in the world it may be stressfull at first but it should work out in time. Here is a link on how to introduce new dogs. Hope it helps you some.
http://www.ddfl.org/behavior/intro.htm