Oh dear. I hope Ms. Jones is found safe. She has quite this mischievous smile in that photo, she'd probably be fun to hang out with.
Phoenix and the Valley of the Sun is a very car-centric place. I was born there, lived there 34 years (and lobbied many years for the rail system, which was finally put in place after I left the USA. LOL). My point is, most people have cars and what seems like a long drive to people in other states isn't considered a major trip in Phoenix and the surrounding areas. I have a hunch if the remains turn out to be Ms. Jones, someone placed her there deliberately. It's close to the canal, and the valley has a long and grisly history of bodies being found in and next to it. (Including the victims of Bryan Patrick Miller). She may have been abducted outside St. Joes and killed elsewhere, and her body placed in yet another place.
I hope this is not the case. My prayers tonight are with Tereina and all her friends and loved ones, and with whomever the remains are, if not Tereina Jones.
Oh! Also, I have no idea what that building might be. It's been nearly a decade since I was last in the Valley. is there some sort of "reverse look up" for addresses the way there used to be (and may still be) for phone numbers?