Losing weeks of work isn't pleasant, but I think your reaction is a bit over the top.

As a developer I know that even when you put in the time to bug test your app it can still misbehave, and as someone who's involved in managing a support team I think kathrine did a pretty good job considering she didn't erase the notes and she can't really will them back into existence.

I've lost plants of important data in the past because I only had it in one place, the lesson here is that when you have important data you really want you should keep it in more than one place.

Good luck with your novel!