A college student has a superstition that people killed at a music festival she goes to.

Hi tony18,

To me, this is what you are trying to say:

"A college student has a premonition that there will be a massacre at a music festival she is going to attend."

But I think the logline above should be co continued with "and", and you should mention what the college student does about it.

I hope this helps
Good Luck