Owner issues?

I took a dog for a week to board and it was besides my better judgement as i didn't get good vibes from the owner. Just didn't like her. Now the dog is here, pooping and peeing on the floor when I was assured she was housebroken. She has taken a liking to my mother who is nursing a dog with cancer. The dog we are boarding ate the sick dogs food.Now my mom has to feed her by hand as the boarder jumps up down begging and barking. She scratches at the door if i put her out during the feedings. She is not kennel trained which bothered me also at first. yes I had all the red flags and ignored them because I thought, how hard would a sweet little dog be? After the boarding dog got the food accidentally she has not eaten hers. We decided after she brought out the empty bowl in her teeth as if to ask, "please more." I texted the owner and asked if it was ok to give her a treat of our dog food , and she reacted coldly and disrespectful in her responses. I would like to end this week long board but the owner is gone. She is out of state. Her last words made me angry after i explained the situation , she reprimanded me like I was a child.

Because of the dogs poor behavior I am putting my family out. The dog is nice enough and gets along but the owner is a problem. I will not take a dog when I don't like the owner next time . How will I avoid the bad review when it comes? Its hardly fair to my rating because the owner lied to me.