I agree with getting Baby checked out to rule out this being a medical problem.

Otherwise, and i really do not mean to sound insensitive, but I've kept quiet long enough. It sickens me and angers me to no end that someone would even consider rehoming this aggressive of a dog!!! What if you were out walking Tikeya and it was some strange dog that did that to her? How would you feel about this other dog running loose and attacking her.

Please reconsider rehoming her and do what is best for everyone. If this turns out to me a medical issue, fine I can see rehoming her. If all the test results come back normal, then i BEG you to PLEASE have Baby put down. Unless this is mediacal, i really don't see any chance of Baby being rehabilitated. Especially since you said that her brothers are dog aggressive too.