Sometimes they will slow doen growth to develop more root and then they blow up again when the conditions are perfect, make sure u didn't over water this one if you water both simultaniously, as one may have still had more water in thr soil compared to the other, and the one in fabric pot has more dificulties to water throughly because water usually will go thru the sides of the pot not allowing for a fully wet soil when watering so that may dry up the ends of the roots making her not develop as well, and this seems like thr most Logical explanaition to this one.