Things I don't understand

Funny! My oldest sister(Ruth) would bring camper, for several years, and of the evening she would ask another sister or me if she could use our shower? Why sure! One day we were all around the campfire and I asked Ruth if she had ever used her shower since she had it? She ignored me! She always used the tub for putting pop and groceries in. I said but have you ever used it? She would not answer me and we all laughed! I asked, don't you want to know if it works and she still ignored me! We laughed, again! I always winterized her camper every year and she did not want to know how to do it! She passed away a couple years ago but we had years of good memories with our families!