iphone 6 was stolen today

Hello,

Someone stole my daughters iPhone 6 which is a device on my account but I can't see device in list on "find my phone".

She was at a farm in Roy, WA at a school for herding dogs and left it while she went to take her dog for a lesson. While away it was taken. She was gone 10 minutes and the phone was gone upon her return. She said that she had no reason to distrust the people there.

Now she does!

I think we are SOL.:(

Thanks in advance,

Joanna