I really liked this story.
I don't think that it is too short. But should you intend to make it longer anyway, I'd suggest you simply write part 2 more elaborately, "live" so to speak, rather than telling the events in retrospect.
Had there not been a part 2 at all I would have liked it just as well, though for different reasons.
Other than missing commas here and there, I didn't come across anything wrong with it much in its entirety.
On the first page however, (and there only) were quite a few grammar blunders.
I especially liked the style you (consistently!) wrote this in, and the mood you created thereby.
Nice read.