I'm pretty sure that I've heard this story before, but I don't know where. Was it on Starship Sofa or something?
Anyway, the story was fairly cool. the concept of alternate worlds colliding and merging was well handled, right down to some people handling it and some people not taking it very well. There is the implied contempt for her parents trying to ignore the alternates living in the other side of their house, which is subverted when she herself does not take an aspect of the change very well either, and so is not so much unlike her parents at all.
All in all, a story worth listening to. I enjoyed it, even though this was the second time.
Edit: Found it, it was in Starship Sofa episode 304