I'm doing namus searches right now to see if maybe I can find her..
John, you mentioned that he had been calling Idaho. Do you know if he had ties to other areas?
Oregon and Washington State. His daughter was estranged from him and moved to Washington where she lives now. He ended up selling his property in Tucson and moving to Oregon where he eventually died.
edit: I guess you probably meant on the phone bills - I only paid attention to the Idaho calls because there were so many of them. I believe I tried to identify the person that he was calling. In truth I recall it being Boise Idaho now, but I'm not positive of that and it took some time to remember - it being so long ago. Another thing I might be able to confirm with the detective in charge of her case.