I sent your save to Barnie, he's experimenting.
For my screenie he has this explanation: Josie has this white sphere around her, correct? So she is invisible and standing in the wall shadows - we're still discussing it - because I had this phenomenon with Josie in an open room, so the shadow theory doesn't apply. He can't reproduce it - but I'm going to try it this weekend again and if I'm lucky I can make a shot again.
Kiya