Assuming this isn't shown through Mei's vibrantly tinted goggles, and actually did happen as portrayed, this does make me think that we will see the past flame come back at some point. I mean, if her behavior toward Mei wasn't confusing messages and mixed signals epitomized then I do not know what would be. I don't know that in that scenario she'd be the endgame, and honestly, I wouldn't want it to be the case either way, but I do feel that the setup is there at the very least.
Other than that, I'm dying to know how exactly they got into this (hot) mess. Mei has some "woe is me" energy that amuses me thoroughly. Honestly I'm a bit envious.
Nah, the sixth sense is seeing dead people...
Part of me really wants this twist.