Your teenage daughter is showing signs of anorexia. She will not eat in front of the family, she will only eat a few foods, especially those low in fat and calories, and more worryingly she appears to base her self-worth on body weight and body image. Further you have recently discovered a supply of laxatives in her bedroom.
Relax, don't delve too deeply into the problem. With the soaring price of food due to the summer floods, you could be on to a winner!.
You never know, you could save enough to book that foriegn holiday you have always promised yourselves.