Massage! :) Find a licensed therapist who has been trained to provide pregnancy and post-pregnancy massage. It will help the healing process immensely and also help with post-partum depression and stress.
Raw coconut oil will help soften the skin, and heal the skin around the wound (not to be applied directly on top of the scar area, but within 1/2 inch. Jajoba oil (pure), aloe gel (pure) and shea butter (pure) are also great skin healers.
Pedicure/Massage - for those tired feet that she won't be wanting to reach!
Healthy snacks and naturally sweetened goodies such as naturally sweetened apple sauce, carrot sticks, frozen fruit chunks (grapes, watermelon, bananas, blueberries, peaches, etc.) are great alone or paired with high fiber cereals or yogurt. They're packed with nutrition to aid in the healing process and will help give her the energy she needs to take care of her baby as well as herself.
Hot pack! Either flax seed/rice and flannel with essential oils or crushed herbs/flowers (you can make your own to microwave - careful, they can catch fire if microwaved too long), or water bottle, or electric heating pad (this would be my last resort). Not to be placed directly over the wound until the surface skin has completely healed. Place on low back area. Will calm the nervous system and bring pain and stress relief as well as induce healing.