Can I find my daughter's iPhone using my MAC?

I am trying to find my daugnter's lost Iphone. She has her computer with her, but is not online and wants me to search for it from my computer at home. Is there a way I can do that? When I go to Icloud and hit find my iphone, it starts looking for mine. How can I put in her user id and password from my computer?

Thanks, its probably an obvious answer, but I can't seem to think of how to do it, or to find it online.