Drama Queen and her evil lil' Indian Brother

So Izze and Caden are sitting nicely in the chair watching a movieIzze steals Cadens bookCaden pulls Izze's hair Izze starts to SCREAMThere Caden sits with a handful of hair. Literally a handful! I have to step in now. I tell him that is naughty. I have him apologize to Izze and give her a kiss. All the while Izze is acting as though she may die, the fit of all fits, she may need a doctor, she claims she is now bald, she can never wear a pony tail again! I place Caden in time out.I return to the room and Izze turns to me as calm as can me "Can I have a treat" Like nothing happened. HOW does she go from being scalped by an adorable blond Indian boy who left her on deaths doorstep not 30 seconds ago to HUNGRY in zero point 2 seconds?