Who's Metal Lee's mother? Why wouldn't they just say it if it's Tenten?

I'm one of those conspirators thinking Tenten is Metal Lee's mother, because it's better her being the mother to Metal Lee than just some random villager. I don't know why they don't just say who's Metal Lee's mother is. Or perhaps, it doesn't matter since it's not his show. Kishimoto still haven't clear up the situation with Gaara and his son, so I don't have much expectations when it comes to Metal Lee and his mother.
Maybe!  Your opinions are important in comments 🙂😇