She'd definitely being a bit more flirty when she's around me.
How do you define flirty?
I am highly suspicious of a WW flirting with her LBH. My advice is to place no value in her flirtatious moods, if she has expressed reservations about reconciling.......as though she would have to give up a lot in order to R with you. I know every WW is not exactly alike when it comes to feelings of remorse, etc........however, IMHO, if a WW truly experiences remorse, then it seems to me that you would be able to detect some humility when she interacts with you. I'm not suggesting she should not ever show a lighter. uplifted side......but be careful about seeing flirtatious behavior as some indication of her readiness to reconcile.
I want to point out just a few things to consider when your thoughts turn to reconciling with a WW. First of all, if you catch her not being completely truthful......no matter how insignificant, let that serve as a big warning. Second, if she is trying to cling to any new friends or GGW activities developed during her period of rebellion, then you better hold off reconciling with her. Third, if she blames or finds excuses, rather than owning responsibility, then she is not ready to recover from her wayward mindset and you will have more of the same bad treatment in store for you. Fourth, if she reflects a sense of entitlement, and/or she won't swallow her stubborn pride, then she is not ready for reconciliation.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!