Lost iphone 4S from Electric Picnic

I lost an iPhone 4s at the campfire in the body and soul area. It has an Aztec striped pink/purple/green/blue type cover on it. When we rang it from the campsite and a girl called Aoife answered it and organised to meet us to hand the phone back but then we weren't allowed back into body and soul cause it was about 3am. We called her back and she said she would leave it in lost and found but it wasn't there this morning if anyone knows Aoife or has any info I'd be so grateful...