I would probably wait until next year. If you retest now, you are sending your DD the message that she didn't do well enough. That may just increase her anxiety. I would wait until next year, and then do the mini practice tests with her before she tests. Emphasize that it doesn't matter how she does. If she wants, she could set herself a reasonable goal (e.g. trying to complete, say, 40-45 problems on the math test).