how do i help my sister???

my sister was raped last week by someone i thought we could trust and i don’t know what to do. i took her to the emergency room for a rape kit and we filed it with the police and everything but i feel like i need to do something to help her emotionally i don’t rlly know the whole story she cries every time she tries to talk abt it so i don’t bring it up. i just feel like i need to do something to help her get her emotions out bc she’s my baby sister and i feel like i should have done more to keep her safe she’s only 15.