My guess is she doesnt eat right. There is no point you giving her 3rd hand information as she wont have anything to do with it.
Pcos can be controlled with diet and exercise. But it takes a big commitment that most people dont have.
Insulin is a growth promoter yes, however it can goto lean mass or adipose tissues. It depends on her activity level and macro intake.
And it will take longer then 8 weeks and alot more then "boot camp"
There are some herbs and nutrients that have shown promise in literiture regarding pcos.