>>81858655
There's a combination of things you can do to help her along:
>Diet
High carb, high protein and full fats can help improve overall weight gain, both for muscle to support her weight and the squishy fat you wanna get your hands on.

>Excerise
4 times a week, 45 to 60 minutes each session, for a start at least.
2 days for weight training, and 2 days for light cardio and stretches.
>Cardio and stretches for general health and maintain flexibility
She needs to have healthy joints, obviously.
>Weight training for muscle growth and hunger stimulation
This helps build and shape the muscle meant to support all that jiggly goodness.

>Recovery and Supplements
8+ Hours of sleep is a obvious help, since it helps repair daily physical fatique and regulate hormones.
Your body heals when sleeping.
Estrogen supplements, protein powder (in shakes or mixed into other foods) and of course...some special cookies.

Also, increasing/maintaining collagen intake helps with general recovery as well as keeping her skin nice and smooth.

Any further questions so far?