After what happened here http://capo16.deviantart.com/art/A-Visit-To-The-Doctor-3-537218228?q=gallery%3ACapo16%2F37290612&qo=0 Dexter refuses to believe that she is trapped on that body so she bought a special sphere, that supposed to do is slowly break the curse as she is close to the sphere, but the effect of the curse started to act, inflating her body. Dexter has no choice to adapt her now bigger body.