I wash the cars in the driveway of peoples homes. Afterwards I take pictures of the car to show my work. Then, I use my pictures to make on-line ads. Is that illegal? Someone is claiming I have breached their privacy and is demanding that I remove the photo of her truck. She is VERY HAPPY with my work but is now threatening to leave a negative review of my business because I am using a picture of her truck. What are my rights???