#spoiler its because of mi

The beginning of Kass and Mi’s relationship… Kass being a little shit. 

Kass is from one of the big high ranking families that are favored by Lolth. Kass’ mother wanted her to become a cleric of Lolth, but Kass always loved swords way too much and wasn’t very into the whole worshiping-Lolth-thing. So she became the big disappointment of the family by becoming a paladin instead (still a little worship, yes, but also a lot more fighting and swords). While the role of a cleric is reserved for those who come from high ranking families, any woman drow can work her way up as a paladin, so it’s not as highly regarded. 

Because Kass came from a nice family, the instructors and captains of the order favored her and she got things a little easier just because of her name. Mi’kaela, however, worked her way up from nothing.