I can understand how Lafiel got categorized as a Type D, but I see her more like a Type C.
She's definitely royalty, and very strict, but all she really wanted was someone to confide in, and the fact that she and Jinto got on such good terms early on was both refreshing and satisfying. They've been really good friends throughout the entire series, and Jinto is just completely awesome even though he has no real strength.
But yeah, Lafiel should be Type C and she is one of my top Tsundere picks (well... since she's considered a Tsundere).
In Ragnarok Online, I was once known as Athero, a noble Lord Knight whose only wish was that he swung his sword for a just cause.
TrueSilverFox and Mon_Ami roamed Caballa together in Trickster Online, searching its ruins of splendor.
Valeria, sworn only to her sword and herself, traverses Erinn in Mabinogi with her pet silver fox, Truesilver.
"Whoa, TrueSilverFox, girl! Anyone ever tell you you look like some sun-bronzed Greek Goddess these days?"