I'm Jessica, and have three characters here- one with legitimate opportunity for history, and a second for plot-dramas!
Thren (thren_canondais) is a wandering apostate, but spent the majority of his youth traveling between Chasind groups, learning what magic he could before moving on again. It's possible that Thren spent some time in Aedre's midst. I haven't played much with that beyond his history and some planning with NPCs, but would love the opportunity to play with the idea a little more.
Then I have Tobias Statler (tobiasstatler), my wizened but lyrium addled Templar. Over the years, he's traveled a great deal, doing Templar-y things like ridding the world of evil bloodmages and kidnapping apostates convincing apostates to legitimately join the Circle. It's incredibly likely that Aedre and he have had some brief interaction.