i think she even made it explicityly clear that it wasn't because she was a female. It's the idea that they would change hosts, they would be the same person, but they would also have the memories of the previous person. it was hard for her to wrap her mind around that concept.

hmmm going over my research, i may be off... i need to rewatch that episode....

but yeah i also saw it as a reference to acceptance of homosexual relationships