This news is a few days old now and the video footage of the so-called burnt out building that ISIS claim she was killed in by a Jordanian air strike is widely believed to be non factual, there was no sign of smoke etc coming from the building. I think it is widely believed this was ISIS propaganda but sadly with an element of truth, in that she was dead.
I think they were using her in a similar way as the Japanese hostage, they had murdered them but kept the deaths quiet until they could get some mileage out of it, that's my belief anyway.
There was a US spokesperson who said she was believed to be dead but I think they have more information as to how she died than disclosed. They said at the same time 'there are other US hostages'.
I could be wrong obviously but that's how I read between the lines.
Whatever is the truth they are pushing the buttons for sure.
It's a horrible state of affairs.