Now that I am at my sister's house, I am happy to report:
1. She doesn't use paper plates on an everyday basis. She uses regular dishes.
2. She recycles.
3. She uses rags for cleaning instead of paper towels.
4. She uses cloth napkins. I saw them sitting on the table tonight, all pretty and flowered and soft from repeated uses and washings and, ding!, I remembered: I started using cloth napkins a few years ago AFTER I SAW MY SISTER USE THEM AT HER HOUSE.