Talk:White Fang/@comment-1827503-20180619132132/@comment-4010415-20180619183655

Blake implies that Kali was a member of the White Fang, in A Much Needed Talk.

Blake: (pulling back) I should have left the White Fang with you and Mom. I should've listened to you, and I'm sorry. (turning away) I'm so, so sorry.

^ In that quote, she pretty much outright says that both Ghira and Kali left the White Fang. Kali can't have left if she wasn't a member. Therefore, she was a member.