AngHi Jon,
I am going to be devils advocate... I have 21 SWCAH and I am short statured and overweight. (5,3 175 lbs.) I have been "chubby" all my life, but never morbidly obese. The lowest I ever weighed in my adult life was 155 lbs and I had cut way back on my dex and was virtually starving myself. My testosterone levels were too high though and my hair started to thin. But you know what, I am healthy, have always been active, - never had a shortage of boyfriends - (cause I know that you are probably worried about that too.) I have a high stress job, a 6 foot tall husband, a 3 year old daughter and I manage to keep my house somewhat clean... so in the end weight and height are irrivent in the big picture.
Keeping your daughter with a healthy self-image is the most important thing.
Good luck!