Ask her if she has twin daughters

She sighs and rolls her eyes.

"What have they done now?" She asks, then without waiting for a reply looks up at the ceiling and yells "GIRLS! Get down here at once!"

Oh shit! You didn't expect that. But you hear movement from upstairs already, and all the customers in the shop are turning around to look at you.

"Well?" Rasna asks.

You gulp, but the twins will be here in a few seconds, you're going to have to think up some sort of story fast.