Just finished the game, about five minutes ago.
This is one of the few RPG Maker games (stuffing/vore games in particular) that I've played that felt truly original.
The dialogue was sharp (though on occasion, I did find some of the repeated returns to 'I'm not like you/that's okay, you don't have to be' moments a bit anvilicious), the 'meta' moments make me chuckle, and I actually became attached to Amber and Janet as characters.
The puzzles were creative and didn't get in the way of the story.
Oh, and the lead-up to the ending actually made me a bit sad for Amber and company.
Downsides: I agree with what some of the other comments say -- the ending was a bit too abrupt. I would have liked to see more of what Amber and Janet's post-Someone life actually looked like, instead of having the 'tell-don't-show' infodump right at the end.
The journey in the RV was also a bit too long. One or two fewer stops might have been a good idea, but it was still enjoyable.
Rachel... well, I enjoyed the 'Rachel continually misses the point' gag, but I never really understood why she was so jealous of Amber (I knew her reasons; it just felt like it came out of left field and Rachel never properly explained).
Other than those admittedly small quibbles -- great game! I hope that there's a sequel one day, because I want to see what happens next.