My 14 Month Old

Can somebody please give me some advice? Im about to lose my mind. My 14 month old girl loves digging in her diaper! And ive been struggling with her to get her to stop for idk how long now. nothing works. telling her no/its nasty. popping her hand. moving her hands. shorts and onsies dont help cause she'll go through the bottom side. i just dont know what to do to get her to stop. she messes her diaper up and it ends up leaking and her hands smell like piss! anyone else had this same problem? how can i solve it?!?!