Charlotte the Vampire Slayer does have a nice ring to it. Sarah Michelle Gellar and Freddie Prinze Jr. shared photos of their 5-year-old daughter, Charlotte, pinning her dad down during jiu-jitsu class — with skills that might be worthy of a new Chosen One. #TuffChix she controls the arm and executes the trap and roll #BullyProof #gracieacademy,” Prinze captioned the snapshots on Twitter.