As much as Derek appreciates Glinda's calm attitude while receiving the information, he still does feel bad. "Yeah it's not been my favorite thing to have to do ever," he admits with a sheepish smile, apology still in his eyes. Even though he can't control the fact that he's aware of her fictional existence in his own world or the fact that he really had to tell her before they can truly proceed with any level of relationship, he still feels responsible for making her uncomfortable by sharing the information.

When Glinda tells him she wants to dismiss it until tomorrow, that's actually a huge weight off Derek's chest, because it means that he's got time to sleep on how best to gently proceed without breaking her brain more than he probably has. "I don't know the whole series, but what I do know, I'm willing to share. Tomorrow. That works for me."