I agree with 1000Knives and Fnord.
But seeing as you're trying to get the family behind her and she sounds Self concious.
You always could get your hands on p90X or Insanity, Diet and get the Whole family to do the Work out at home. It'll be tough and there's likely alot of more effective methoids. But this way you'll have the whole family involved for a hour a day within the comfort of your own home all the while improving yourselves, Not just your daughter.
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Your Aspie score: 56 of 200
Your neurotypical (non-autistic) score: 144 of 200
You are very likely neurotypical