I do hope that if the event didn't happen, she gets some sort of punishment for making up the story, like at least some hours of community service to compensate for the time and ebergy spent by the police force and school administration on this. or if it didn't happen, she should at least get counseling - by making this up, she has made it worse for those who actually have this happen to them and risk not being believed.

If they did a rape kit, why didn't she confess making it up then, if she knew they wouldnot find anything?

What an awful thing to have happened - she needs counseling whichever is the case.