Can't use the restroom at home

I have a question. My sim is divorced (on her own) with triplets. She was in a 2 bedroom small house until she graduated. Now I found a great house and moved her and her girls into it. However, when I have her go to the bathroom, and click on the toilet, she goes to sit down, jumps back up and the only thing she has on is her bra. I tried changing toilets, nothing. I tried having her go upstairs, same thing. I tried turning off the mods, still the same. I am thinking somehow it's the house, because it didn't do that at the other place. The girls can use their potty chairs. I also tried resetting the sim. Nothing seems to work. Any ideas?