Frala has two adolescent sons and for the first time is in the strongest position within the troop. She is likely taking advantage of this after years of being on the bottom of the pecking order. Descriptions of her on the website attribute her abrasive personality to her low ranked position and exclusion by the mother and daughter Mouila and Kriba.
Interesting that they mention 'Frala's' 'abrasive personality'. As long ago as when they were still at Apenheul before travelling to Sydney, I remember watching a T.V. programme about the group- in describing their various personalities, when he comes to Frala, the keeper says 'Frala is a bitch really...'