DH is an art professor so I ran this one by him. His first reaction was "Unfortunately you can't teach someone to lIke their own art." He suggests trying to combine art with another interest of hers. I.e. if she is interested in plants have her draw or paint plants. Another idea is to play games with her where you both make art and she sees just how bad you are. Or even have her teach you. If there is a community art center near you there might be a class available for kids in her age group where she can be with others facing the same challenges with their artwork.
For years DH had told me the hardest part if his job is getting his students to "relearn" what was instinctive to them as children. Years of well meaning adults teaching them rules like color inside the lines or making things look "acceptable". So your DD is certainly not alone. He says this is why most people don't call themselves artists as adults.
