rory's a natural born mage and largely self-taught (with an apprenticeship for a few years back in his late teens/early twenties), and people who think they're superior are catnip when it comes to messing with/getting sucked into petty rivalries for no reason other than to become a personal pain in their ass! so if you really want to push the shenanigans between them into overdrive and she spent any time in europe, they could have known one another when rory was still off cutting a swath of chaos across the uk and eu.