Looking for Rebecca Cawthra

I have exhausted all known resources so I'm hoping this works. I am looking for Rebecca Cawthra (maiden name, married? not sure). I believe she grew up in Michigan but not sure of that either. What I do know is she is or was an officer in the US Army. '90-'91 stationed at Camp Hovey Korea. I lost touch with her after that.
Any help would be greatly appreciated.