Allison was at work when it was the end of her shift and she was the only one there so she had to lock up all doors. Once she was done she walked out to her car and that's when she sees a windigo once she saw it she screamed then the windigo looks at her and growls at her before running after her. She runs through the woods and that's when she noticed two guys then while she was running she falls on the ground once she was on the ground one of the guys came up to her.

Dean: Hey, hey calm down I'm not gonna hurt you
Allison: I don't believe you
Sam: hey calm down it's ok
Allison: what was that thing
Sam: it was a wendigo
Allison: you mean like the one that's in kids book a windigo that eats people.
Dean: wow she really does her homework perfect for you Sammy

Sam looks at Dean weird

Sam: come on let's get her back to the hotel

Sam and Dean took Allison back to their hotel room to explain to her what just happened