The accidents might be a dominance thing with your sister, try using doggie diapers while she is at your parents house. I am not sure if 1.5 weeks is enough time left to break her or change bad behaviors, at this point your parents may just want to be reactive (lots of walks, diapers, etc...) vs proactive (training, discipline, etc...) Until you come home and get her and you can work with her to get her potty habits back in order! She could also be peeing cuz there is another dog in the house and she is used to being single in HER house with HER things that smell like HER, not like Darci! eewww haha (kidding) but she could be marking her territory and making herself at home!
__________________ “Petting, scratching, and cuddling a dog could be as soothing to the mind and heart as deep meditation and almost as good for the soul as prayer.” ― Dean Koontz |