Thanks for checking in.
She's still in the house. I've brought her out a total of two times while I changed her cage and so she could get some fresh air with her sisters. She was glad to be out both times, but the last time another gal started a pretty good scuffle with her. She held her own for a bit, but I did finally put an end to it and brought her back in.
I believe I have discovered what essential oils to use to treat her, but I've also discovered that if I'm not extremely consistent, the issue does not continue to get better.
So, while her abdomen is still large, it does appear to be getting softer and a bit smaller. And she is also eating and drinking a bit more, and finally pooping more - still not as much she should, but her poops are now at least normal consistency and color.
I've not drained her abdomen as has been suggested because I don't know how, and do not want to hurt her.
Our family is tired of having her in the house, but no one can seem to bring an end to it all - especially now that I seem to have found a "magic button" with oils.
Further suggestions - bring em on!

Thanks again!