Hi,
Shamrock Shamus!
I liked your story. I agree with everything Lemon said! Good writing describes the effect of the scenario in relation to human senses (visual, sound, tactile, taste--you didn't use smell, but that's easily addressed). Great writing combines these in interesting and unusual ways to present more complex things.
You let us know earlier what your goals for this story are, and if I may, can I suggest an idea that would make your writing perhaps a little more effective? (I'm of the "design is destiny" school of thought--engineering dictates outcome.)
I don't know much about autism, but I do know everyone is different and I while I don't know where your daughter fits on the spectrum other than being Level 2 with fine motor skills limits. Perhaps you could include more cues to help develop those areas that would be ideally helpful and inspirational. For example you might find ways to incorporate how your character or characters solve or deal with similar challenges. It could be done for interpreting facial expressions, etc.. I hope this makes sense.
As a bonus, be sure to mention to your professor that's what you're doing. As a former student in a former life, I learned that framing your assignment on your own terms (within the assignment's criteria of course) more often than not, guides your professor to view and grade you from that perspective.

Win-Win-Win!
Looking forward to Meng's next bit of adventure!