<human>: I am visiting my uncle's house to watch his dogs while he is gone for two weeks. He has a total of three dogs. The youngest, a 5 month old bouvier, will not stop going to the bathroom in the house. My uncle leaves in a few days, and I'd like to potty train the dog so I'm not bald by the time he returns. 

Background information: The two older dogs are absolutely wonderful and potty trained. The oldest is about 10, and the other is about 2 years old. They have had no accidents in the house. When the dogs are let out, they go out the patio door in the kitchen, which leads them to a deck. There are about 15 steps they go down to get to the yard. 

The dog will go outside and go to the bathroom during the day. I think she's afraid to go in the yard by herself at night (when most of the problems happen). He doesn't want to crate train her, and buying one for her size is not really in the budget anyway. There is a light in the backyard, but it doesn't illuminate much of it (and doesn't light up the steps down).

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<bot>: – My uncle's 5 month old Bouvier wont stop pottying in the house and is afraid to go in the yard by herself at night. How do I alter this behavior?