While in theory this could happen, it's not going to happen in practice. There's too much exposure to air and movement for any virus to survive, and it sounds like it was only in her mouth for a very brief time before she realized it.
Sharing drinks, eating utensils, etc., are the same - it can transmit herpes in theory, but especially if someone doesn't have an outbreak, it isn't likely at all. It's just not an efficient way to transmit it.