I have a 9 month old female French mastiff. I am having a very hard time potty training her. She was doing well right around 6 months and then all of a sudden decided she was done going outside. She has a doggy door that is open 24/7. She is kennelled only when it isn't nice outside for about 8 hours, any other day she is outside in the yard. I feel like she has just gotten to lazy to go outside. It doesn't matter what she has to do or if it's on the carpet, vinyl, or her doggy bed. Please help.