Family doesn’t assist in potty training

Does anyone else have a NF that doesn’t assist in potty training at all.. it’s been a few weeks of trying to potty train and I had an assumption that nf wasn’t helping based off of nks reaction and after some comments I’ve realized that I’m literally expected to single handedly potty train nk myself… so everyday when I leave nk can do whatever they want, every Monday goes absolutely horrible because nk knows the SIMPLE boundaries are coming this results in me getting hit and excessive crying that I’m just done with because it wouldn’t be like this if nf actually tried but instead it’s nk cries, ok nk must be suffering so they immediately stop and play into nks emotions and give whatever nk wants… Yeah?