Prescilla was just trying to be friendly she didn't know he was going to be all charming and stuff! Too bad Alistair was in her party at the time, gettin' his interest on and everything. Then this comic happened.
I swear I used to think it was a shame Teagan wasn't available as a romance-able character, but then I realized he would be Alistair's biggest cock-block and that just seemed sad.
Excuse the bad art. I was rushing and it still took me forever.