There's Something About Abbey
Something that's not quite right at least.
The girl walks from the horse until she's about fifteen yards away from you guys. But it's not Abbey, really. Well, it's hard to say. The girl you murdered in Vrill's barn, you only saw for a little bit, a long time ago, in the dark. Then her rotting head floated around with you. But you think that the Abbey you killed, who was in your party, had medium-length wavy brown hair, while this Abbey has long, straight blonde hair. And the eyes and nose are different. Yeah, you're pretty sure this isn't the same girl you killed. Which, a priori, makes a lot of sense.
She's also not reacting the way you'd expect a daughter to react when her father is mortally wounded and surrounded by four potential murderers. In fact, she's oddly without affect, just sort of staring, expressionless, at the lot of you. Sure, it's a strange sight, sort of Disney-gone-horribly-wrong, with an eagle, owlbear, half-elf, and priest. But there you have it.
Apprentice Steve, however, sure is the same guy. He comes to his senses and yells: "MASTERVRILL!!! NOO!!!!"