How does Cherry being willing to testify against Bob and the other Socs change the story? from the outsiders

Cherry's willingness to clue the greasers in on Soc activity shows her to be in a kind of limbo. She is no longer affiliating herself as a Soc, but instead is watching them as an outsider. However, the gang definitely does not consider her to be a greaser, because she is merely reporting to them to prevent any more fights between the rival groups. This existence, not being affiliated with one group or another, can be a scary one. It is especially frightening to adolescents who use the group mentality as a barometer of their own self worth. However, sometimes it is necessary to step outside of one's own comfort zone to stand up for an issue in which you believe. This is what Cherry is doing: Tired of the fighting and the gang mentality, she attempts to resolve the many perceived differences that separate the two groups.

I believe it changes the story by separating the two groups

I have the same question on my quiz for school but i’m not sure.

Explanation: