Well, I don't have much of an update at this point. One on one work with her won't begin until this afternoon. So far, she has spent her days in the daycare and getting accustomed to lots and lots of dogs, staff and activity to go on around her. She needs the chaos of dogs sniffing her, approaching her, etc. At home, her first response is to attack. This socializing is to numb her to this, and hopefully dull some of the anxiety she feels when she sees another dog.
The guy who runs the daycare said she's been nothing but a sweetheart. She's staying very close to him, though and giving kisses (nice to hear). The next couple days, they'll take her out in to different scenarios - the park, sit in the lobby, etc.
The trainer did confirm that it is fear induced - and definitely more so with men, than women (as I suspected). Apparently, there's another Bully (female) named Ruby, who she's very interested in.
I'll get another update today.
Thanks for all your kind words. I miss that bubba girl so much.