Surgery is never fun, especially when the recovery period can be that long. My advice would be to look at the things you normally do while camping as individual goals for her to accomplish one by one throughout her recovery process. Start with the simple ones and gradually progress towards the ones that will take more of a complete recovery for her to complete. You can also utilize time in and out of the camper to focus on the PT (pain and torture) exercises that she will need to work on.
These little things will give her a feeling of moving forward and accomplishment and she will begin to see the difference and progression.
This is what helped me get through the surgery that has now graced me with a titanium rod through the center of my femur attached by six wonderful screws. Broke my femur six weeks before my wedding and by following this was able to walk down the aisle without crutches or a cane, which was my main goal to accomplish