Originally Posted by Weasley Mom
Hermione eliminated only herself from her parents' memory, and created a new dream in their minds (going to Australia), so I think you would have some freedom with this. When it is time for them to wipe the DE's memories in the cafe, one of the boys asks Hermione if she's done it, and she answers "I know the theory," implying that she had not done it before. I've always wondered if this was an error (which I can hardly accept), or if we are to understand from this that Hermione used a different charm to affect her parents' memories. :confused: