I think that Snow has to have actually did something even if it is just telling Regina’s mother about the stable boy. I actually would rather that Snow did it even after Regina asked her not to so that it was something wrong. And it does seem that in the episodes where Regina kills Snow’s father and when Snow is hugging the queen at Snow’s father’s grave that Snow doesn’t realize at that point that Regina is going after her, but then when the huntsman first tries to kill her Snow is very aware that the Queen is trying to kill her. I feel like there is more to that story because at some point Snow seems so unaware of the Queen’s anger at her and then later she is very aware of it.