Comic book girl's take on that scene, starts at 5:42.
I expected that.
Typical reaction from someone who read the book, and feels like they 'know it all'... but gets thrown a 'curveball'... and becomes upset because the show isn't going exactly the way they thought it would.
I thought that scene made total sense.
From what we have seen already... it seems Ramsey likes 'the hunt' just as much as 'the kill'.
So he just gave them a 'head start'.
Most likely because he wanted to catch them right on the beach so he could revel in ruining their VERY LAST hopes of escape. (i.e. "So close. But yet so far.")

But they got away instead.
They were a little faster than he anticipated.
No big deal.
That scene is easily explained, or interpreted if she is NOT caught up in the storyline of the books.
