Yep, higher-status female apes sometimes kill lower-status female apes' babies. One of the reasons why female cliques are so important even when females typically do not use them to kill other adult females.

In humans, you see how some women have the instinct to touch other women's babies, and how those mothers are usually scared like shit. Touching other womens' babies is a female status move. -- That's because as a female ape you couldn't realistically defend yourself and your baby from a group of female apes; you would be completely in their mercy. So another female ape touching your baby reminds you of your relative positions in the tribe.