My daughter weighs 51 pound, she's almost 12 years old.  I can't get her to gain weight.  Her drs aren't worried, but I am.  She tends to fall alot, which ends in broken andspranged body.  she needs tall paints, but then I have to takes 6-8 inches off of the waist.  I have found 1 place on the internet that sells super-slim pants, but wow are they expensive.  Does anyone have any ideas?