Answer:
Stabilize her weight.
Explanation:
Anorexia nervosa may be defined as the medical condition in which individual loses his weight with the growing age. This is a type of eating disorder, that can distort the body image of an individual.
Tina is extremely thin and continuously loosing her weight. The first treatment that can be given to Tina is the stabilization of her weight. The healthy food with proper balanced diet and proper medication is helpful for Tina to stabilize her weight.