...Now when I met my girlfriend she was starving herself and was weighing about 106lbs, no ass and no tits. Now she’s got boobs a ass and looking better every day but hates the way she looks. ...
That's what can happen with starvation. The body eventually turns a corner and starts storing every calorie as fat (because starvation eats up muscle tissue resulting in lowered metabolism, plus a bunch of other factors related to survival.) You might think she looks better, but if she's still trying to starve herself, it sounds like she has or is on her way to an eating disorder.
Eating disorders have one of the highest mortality rates of all psychiatric illnesses. More than body image, eating disorders are about control. People with eating disorders typically feel that food intake and how their bodies look is the only thing in life they can control.
ED's are extremely difficult to treat, as the sufferer doesn't believe they have a problem (because starvation can alter brain chemistry) and will resist attempts by others to help. Help is perceived as a threat that people just want make them fat.
I wasted 20 years of my life with an eating disorder, and believe me, it's a sucky way to live. Physically I got over it with therapy and medication, but mentally I didn't get over it until I took up weight training (which soon led me to adopt a better diet). Then I discovered how I could
REALLY control my body. Plus by the time I reached my mid 30's, I was seeing that super skinny didn't look cute - it looked OLD.
The thing that turned me on to weight training was learning that muscle burns calories even at rest, and the fact that a pound of muscle takes up less space than fat. I knew I couldn't spend the rest of my life living on air, besides I really like to eat, yet in my family it is virtually a requirement to be thin. Muscle lets me do both.