He buys it

The boy looks at Bella somewhat expectantly, but soon makes his way with the rest of the group, satisfied with the notion that some half-nude girl wouldn't be hiding in a classroom with another student. Bella closes the door behind him and looks back at Anna, who has taken to hiding under the teacher's desk.

"You can come out now," Bella says, noticing Anna's feet behind the oak furniture. "I've made up my mind."

Anna meekly reveals herself from her hiding spot and steps toward Bella, awaiting her next task.

"Since you disobeyed," Bella begins, "your punishment will be extended. However, I will help you get home." With her last statement, Bella held up her paints, making it clear what her intentions were for the pantie thief. She wasted no time painting a new set of navy blue shorts on Anna's bottom half, making this set a bit better having already had practice. She then turned her attention to Anna's top.

Anna's torso proved to be less difficult. Bella basically poured a bunch of white paint over her chest and then spread it around until it resembled a very tight tiny tank top. Anna's nipples could clearly be seen standing upright in the cold air.

When it was all said and done, Anna was standing in what would be recognized as something a jogger might wear if the jogger was trying to get a full body tan. She had goosebumps on her entire body from the cold and could already feel the arousal between her legs. She was not eager for whatever Bella was about to tell her next.

Which is...