If the situation were any different, say, Zelena wasn't part of it at all, she might have to laugh in his face. But far too much is on the line for her to really enjoy it. Not to say she isn't, but she's not showing it as much as he might expect. As it is, her face is a picture of barely contained surprise.

"You know exactly what Zelena is capable of doing when it comes to getting the dagger. I'm ending this before someone else gets hurt." Or before your son dies again.

It's a good thing Zelena's staying out of the way, because it means she can't see Regina's face. Or the fact she's currently giving Gold the same 'trust me' look she gives everyone in situations like this. Asking a lot? Definitely, especially when she remembers their conversation at the town line, even if it hasn't happened for Gold yet.

"Now, hand it over."

C'mon Gold, read the room.