How to report an AWOL Reserve Solider?

Is there a number to call for the US Army or the US ARMY Reserves to report a possible AWOL solider? I think my friend is either one lying about being in the reserves or two is in there and has not reported. She has been in major trouble lately and is currently in jail in San Bernadino. She uses alias and that is why I think the military has not found her. That is even if she rejoined as a reservist. She exited the military in 2008. Please let me know