In plain sight...

The technicians of Pablo's TomoTherapy machine (radiation) told him that he could bring in some stickers to put inside the machine so that he had something to look at while he was getting his treatment. Pablo and Isabella picked out a fairy sticker and one that said 'Booo' (for her nickname of course). The Dora sticker was already in there (they bring kids from the children's hospital next door for TomoTherapy treatment).