Renet came back to visit the past to defeat the monsters, and got split up from the turtles when searching for one of said monsters.

And she ran into you "Huh, another monster?" she wondered aloud "I thought Savanti Romero had *some monsters..?" she thought aloud, holding her time scepter.

She was confused since they were only looking for werewolves, vampires, mummies, and Frankenstein..? So why were you here?