"she felt like morality "loved" her."

Maybe you can explain to her that internal constructs can feel like external entities.

also from reading her blog post I got the impression rationality was a limit on her ability to choose her beliefs in this area rather than her means for doing so

"I couldn’t pick consistency over my construction project as long as I didn’t believe it was true."

Also this, "until I discovered that their study of virtue ethics has led them to take a tumble into the Tiber" makes it sound like she is a "pragmatist" or whatever the term is or she thinks finding the true morality has to be satisfying for some reason.

Also I can't believe this doesn't bother people. If you are happy to worship someone who sends people to hell your morality sucks. That your morality isn't currently (directly) harming anyone doesn't mean it's not dangerous.