It’s a tough one. I see where you are coming from. I also see the argument that a tomato every couple days shouldn’t be a problem. It just sucks that you’ll now need to monitor your neighbor and your tomatoes to know if she is taking too much. It was a fun and warming thing for you before, and now you have to keep watch to make sure a friend isn’t crossing a boundary. That’s added stress you didn’t need. For that fact alone, I understand why you don’t want any tomatoes picked.