When we got my kittens, we had to sacrifice our doggy door because, well, they could just walk straight through it. So our dogs had to relearn how to hold it for a while. It took a while for Lucy to get the hang of it but she did. Then I went back to school (this was all over break) and Lucy is good for my mom when I'm at school, but when I come home, she poops defiantly, even in front of me sometimes. On the weekends/breaks she's great and has no accidents, but whenever I go somewhere, even just at school for a day, she relieves herself indoors. She's now a year and a month old. I don't know to stop it. I know how to potty train, but now that she's doing it on purpose, she doesn't respond well. I've been trying to spend more time with her and she's fine, but according to her I can't go anywhere. Any ideas on how to stop this?