So there are two photos we don't see at the end...
#1 There's a photograph that's taken when Callie gets caught at the window - but we never see it
and #2 the "blank" photograph, which isn't really blank the poarloid just isn't fully developed yet - but it's the film's way of saying they have no future
Yet we never see the polaroid of the 8am photograph, so did Callie ever see it or not? They show her get arrested in the daytime but we still see the 8pm photograph after a cross-fade of the machine....