Katee's Character has a Backstory, and it was created by Katee
We don't know what the backstory is, but we know that Katee felt it was important to know everything she could possibly know about Dahl, including the bits that weren't written or considered by the production team. For some actors, this is just par for the course, but the reason we're mentioning it for this character, specifically, is because we're pretty sure the backstory plays a big role on how Katee portrays Dahl. Like, we're pretty sure that Katee took the character she was given and made her even better than the writers and director could have ever imagined. TeamSpank is very familiar with Katee's ability to do this, but it never makes us any less thrilled that she does. Bravo, Katee, for always going the extra mile to please your fans and maintain the integrity of the story. We adore you for this!