Uhh... Okay, how about this!

[She claps her hands together.]

I appreciate that you want some help! So let me just... take this nice stranger outside and then I'll come back in and try to help you out, okay?

[Which is when she tries to encourage the woman to follow her just outside the front of the store and smiles pleasantly up at her.]

Sorry about that. It's probably weird talking to a guy about underwear, right?