It's kind of weird she called you "daddy" even if to keep the joke going. Hopefully your wife didn't take her seriously.

spank her

Sounds like she needs some private counseling in your office later....

¡Ai, Papi! Convince your wife it’s the daughter she forgot she had.

How did that go over

She needs to learn work professionalism. That is so inappropriate.

Time to break out the beer and the Advill...

Hopefully you married someone with a sense of humor and she got a chuckle out of it as well.

boy, that sure is awkward, hope your wife is not too jealous of a type and will understand the joke.

Maybe she wants to join in on the "father daughter time"