If that's all the answer she needs, why does it annoy her so much?

"What are you doing here?" is asked - well, no, demanded yet again. While also grabbing her shoes and backing away, shoulders against the wall and edging away from any noise Mel makes.

Shoelaces are tied into a quick knot, too. Rachel had expected to lose them quickly but if they can be held onto - and possibly made into a weapon - she's not going to complain.