Did anyone read Hannah's story?

I've read it and I think it's essential material for any Anne Frank follower. It not only fills you on what happened "outside the walls" of the Secret Annexe after the Franks went into hiding but also explains a lot of things that happen in the movie like the two left hands comment which Anne herself teased Hannah about and Mr. Goslar dressing up as Hitler which actually did happen albeit not at Anne's birthday party.

You also learn about how Mrs. Goslar resented the Franks not taking them with them to Switzerland, Hannah's boyfriend, Hannah's own tale of survival in the concentration camps and lots of other interesting bits but I already gave away too much. All in all it brings good closure to the Anne Frank story.