So, you guys are actually almost hitting the turn of the millenium? (Guessing by age.)
Nowithstanding that my opinion has no real weight, since it is your campaign, I would have to say I absolutely agree with Haydith with not being evil, or being controlled by evil, being from the nominally ' evil ' nation, it just makes sense that she is a black sheep. I would think that at some point, she might be almost swayed from her path by an evil family member, but good (or rather, non-evil) should win out. Seeing that she is the granddaughter of Kaius, I would expect she has a hard side to her, however.
Becoming Queen of Galifar, hehehe, quite the task. Draconic knowledge is certainly an edge over the other contenders, past and present, though. Do you have the issue of Dragon that details Dreadhold, with the Karrn In The Iron Mask?