Board Thread:Speculation House/@comment-27404492-20170417075739/@comment-4010415-20170418083207

I do believe that Blake and Ilia were friends when Blake was in the White Fang. The Albains said that Ilia would be delighted if Blake rejoined the White Fang, after all, and she seemed sad when she told Blake "You shouldn't have come back." She even turned green and blue, which could be representative of sadness for her, like how red and yellow seems to be anger or frustration.

Maybe if/when Blake starts trying to gather her own group to help her join the fight for leadership of the White Fang, Ilia will be one of the people to join her, though it could take convincing.

If Ilia joins her side, she could provide info, working as a spy. I think if Sun were to infiltrate the White Fang, it would be with Ilia's help, especially since, if someone asks "Isn't this the monkey Faunus you told us about?" she could deny it and say it was a different guy.