When you scan the chip, does a number come up? Do you know which registry? Here is a list of different registries - the k911 is a free registry that she might have registered with.
Some websites to visit for more info:
http://www.avidplc.com/ http://www.avidmicrochip.com/ http://www.homeagainid.com/ http://www.k911.com/ http://www.24petwatch.com/ http://www.paw-rescue.org/PAW/PETTIP...Microchip.html