[nana911]

Time, a lot of it. It took probably 6mths before Bear accepted the girls and he pretty much just tolerates them, and rolls his eyes as any big old man should. It took Baxter about 4mths and now he plays with them a lot. He actively disliked them until then. I made sure he was first in everything until he was certain that he was not being displaced.

But I agree, he was not physically ill. You might want to consult your vet about possibly some very very mild tranquilizers just to calm her nerves a little until she gets over the initial hump of dealing with the intruder. (Baxter was on some after his severe eye injury so that no excitement would exacerbate it, mellowed him ever so gently) Once she is sure that you are not going to allow this newbie to harm her or usurp her place she should begin to calm down on her own.