I agree. The elders don't have any actual authority. Even as an adult it has taken me a while to realize that I don't have to answer to them. If you're wanting to stay in for your friend, then just deny it. They can't prove a damn thing. However, at some point you're going to have to do what's best for you. I know you are so concerned for your friend, but from what I understand she is an adult. She doesn't need to fear them either. I know, easier said than done!

Let us know how it goes and if you need anything. We're all here for support!