So, even knowing all about my black thumb, Sarah wanted to grow a garden. I told her that I'd help her build it but then it was all hers. I didn't want to be involved in the upkeep at all. She was satisfied with my terms and we went to the nursery.
We put our plants in containers -- mostly because it was easier and I didn't have to actually dig any holes. Sarah chose tomatoes, green beans, green peppers, hot peppers, cauliflower, cucumbers, eggplant, lettuce, and strawberries and we made quite a nice garden.
I'm happy to report that, two weeks later, my girl is still garden-sitting like a pro. She's taking very good care of her garden and her strawberries and hot peppers are growing faster than the rest.