I don't think it is relevant but just to state it just in case 1. Donna was originally from Owen Sound I think (where Susan Tice had returned from a family place for her). 2. Miriam Peters once lived behind the SitnEat though they had long moved on north. But did she still have friends from then and would they meet uP at the Sit n Eat.?
Far fetched but after all LE is using the word serial killer.
Funny, i was thinking about Donna and Wendy shopping for a gift of clothing midtown and Erin Gilmour working in a clothing shop, midtown.fwiw.