Take your friend’s young kids out for a day or a sleepover so that your friend can enjoy some quiet introspective time alone or with her partner
Send a meal for the entire family the day after she gets back from the hospital (something on the lighter side and nutritious of course)
Chicken soup (always heals the body and the soul)
Offer to drive your friend’s young kids to school and their after school activities for the first week after she comes home from her treatment
Soft and pretty PJs
A comfortable and well-fitting post surgical bra if your friend is going to have surgery