Best of all, they're doing it with you, and it doesn't feel like homework. This may be a child who's very organized in class and gets it done, and done well, which is a smart thing to learn. The main thing is if she doesn't feel challenged. And a parent can do a lot to provide opportunities. If you have access to a computer, some good educational software is available.
Parents can provide enrichment, exposing children to music, museums, special events.
Make sure they have a library card and take them to book stores. At the same time, homework should not be something new. That's an awfully good excuse to alienate the parent from the teacher and for the child to get out of doing homework. Try to get specifics from the students as to where they're missing the boat on the assignment, and then go to the teacher. Sometimes, they're shoved into a locker underneath an old lunch.