I think that because she is the smallest, and the most recent addition, she is the lowest ranked of the group. The highest ranked female is Kishka, who is the largest and whos mother was the highest ranked before she died, and so she has inherited her rank.
Kishka was born at Howletts(mother Shamba) so her mother was never in this group. But I believe she's the highest ranker and is the eldest. The female whose mother was also in the group is 'Halalli'(mother N'Pongo).
It seems this group has no breeding potential until something is done such as either replacing the male or sending females elsewhere. Longterm 3 of the females have never bred with the male and the 4th(HK) hasn't(?) become pregnant for several years now- is YK still fertile after his testicular operation?
