She wanted the fighting to stop because she hated fighting; secondly, she had a huge crush on Dally, so she would do whatever it took to help the greasers
2. Cherry becomes a spy for the Greasers because she wants to help them get away from the trouble and she doesn't like fighting and she cares about Pony and she realizes that Socs and Greasers aren't really that different.
3. Cherry doesn't like violence at all, she just wish only for the best.