WELCOME, and congrats!!!
Abby sounds just adorable, and like a little spitfire (typical yorkie!)! It's really cute to imagine her romping around the place with her rabbit friend and guinea pig friend...I bet they're all pretty close in size. It's smart that you're still keeping her a bit apart from the bigger dogs -- not bc the bigger dogs would mean to hurt her, but that they could hurt her without meaning to at all.
How old is she now, and how 'bout some pics!!?