Erika, you did the right thing. She will find a good home. Hugs to you and hugs to Fozzie and Gonzo! There is only so much you can do, and it takes a very strong person to admit they cant do/provide everything. You're a very courageous person. You stood up for Fozzie and Gonzo's safety, and that's an amazingly self-sacrificing thing to do
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So-Crafty, I don't necessarily follow a hard line of training, so I'll give you a few names that have shaped my general methodology: Patricia McConnell, Leslie McDevitt, Dr. Karen Overall, Jean Donaldson, etc. AKA, these guys:
http://abrionline.org/experts.php

And I'm a clicker diehard, so I like Clicker Solutions' articles:
http://www.clickersolutions.com/articles/index.htm