My crab shrunk?

i know that this is probably an odd topic to bring up on a site like this but im hoping someone here has some experience. I recently rescued a real beaten up Hermit crab. half of her limbs were missing and and her smaller pincher (shes a PP) was completely crushed up. she had mites like crazy. she was in real bad shape. i was hoping i could bath her to get rid of the mites and get one good molt out of her and she would be better again.

good news is she recently just completed a molt and succesfully regenerated all her missing limbs. she looks great! but i cant help but notice that she shrunk? i didnt know that was possible. i thought they just grew. maybe im just imagining things. whatever

im wondering if im losing it or whether this is a real thing that happens and if so should i be conserned? is there a way i can fix this?