I'm guessing Miss Mochi harvested the sharpie from the pen cup on the desk.
Crap. She's a monkey-dog. Everything not bolted down will need to be under lock and key. And she's nomnivorous-- she'll nom anything she can get her paws on.
Fortunately, she doesn't have thumbs (yet) and may never achieve her plan for world domination. Still, she'd be a wonderful little dictator. Come to that, I'd prefer her to other "leadership." Next time, write in Mochi on the ballot. Chew-pens for every pot!