Heart: Ak! Snake! snake! Heart: Oh, wait. Nevermind. It's just an old shoelace... Heart:...so you can stop leaping to my rescue! Dean: Shoelace snakes don't bite, but beware the unrescued damsel.
What did she want him to do? Once she stepped back, she would be in no danger at all, even if it had been a rattler (exceedingly unlikely on a Philly sidewalk)..No North American snake will chase you.