Having only played the games, I would say that the time travel element tag is only in reference to the AI's private perception of time and how she can seemingly step backwards by an hour or two (which is explained as her predicting the future and returning to the present rather than explicit...
To answer your question
I do agree though that there were a lot of loose ends.
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I also swear there was some kinda plotline early on about an implied future teen pregnancy that was dropped, was a bit confused about that