Piper has a condition where her body tries to grow when she should evolve. The reason she can't evolve is that she
swallowed an Everstone when she was younger, and it got stuck in her gut as her first evolution cancelled halfway
through, leaving her as a pichu, but causing her to start growing outwards, at first it was simply gaining height and
weight, ending up a clear foot taller than her younger siblings. At the age of 20, piper's height and weight growth
stopped, but the growth would continue. This is the reason for her oversized chode currently, since all the energy
that was meant to evolve with ended up redirecting to her groin, causing it to swell to hyper proportions each time
her body tried to evolve, eventually becoming the fat chunky chode she now lugs around. Usually evolution sessions happen every few weeks, between 3 and 5 depending on how much piper does, though they happen more and more often the older she gets