Sounds like you won the bet, sweetie! Go for it.
I would talk to her about communication, though. My wife does things like that all the time, but she has my permission and we have discussed that beforehand.
Talk to her, find out what she said and why...and go from there. Then talk about what is and isn't OK to say on behalf of each other.
Maybe she didn't say anything at all and your friends are trying to out you!
Meghan