Christina had a terrible childhood. Her parents and grandparents were worried about her lack of self-esteem - something that is normal at that age. What is not normal is the precautionary steps they took the help "improve" her confidence. What her parents did was commission her grandad to do a painting of Christina. The painting came out completely wrong, making her look 50 years old and with graying hair. Luckily, she didn't have wrinkles added to her face.
Hopefully, the family didn't decide to keep the painting on a wall in their house - if they did that, Christina would probably never invite any of her friends over - the shame would be simply too much. The smartest thing she could do in a situation like this is to make the photo just "magically" disappear. Perhaps some "thief" stole it in the middle of the night.