Yes, it could have worked, but if Leia remained with Jabba, she would have probably have gained a fair bit more weight as his consort. (Yeah, I mean even more than what's here already. Not that I need to see another 'fat' version of Carrie Fisher. There are already plenty of those available.) Interesting.
I think maybe she just relaxed into the role. Chain's gone, but she seems happy where she is, no? I'd like to hear more about what's not quite right with the anatomy, if you've got a minute: wasn't 100% on it myself.