It isn't like she expects Barry to say anything other than agreeing to her delegation because he's a science guy and he knows that explosives are incredibly delicate, but she gives him a little smile without looking up and nods as well, anyway. "Thanks, sweetie."

She's mixed the base already by the time he's got the chair legs broken off to use as weapons and has found some sort of tape vaguely resembling duct tape — which she hopes like hell will actually hold — and she looks back at him for a moment.

"Are you sure?" she asks. "Because it would take longer, but we could rig something up to do the pouring for us, Barry..." She's nervous about the idea of him adding the final component to create the chemical reaction just because it's a pretty big boom once it takes effect, but she's also not going to fight him on it or patronize him if he really does think he can get clear enough from the door fast enough to avoid getting hurt.