Just wanted to say that even if playing this was brief, it was an absolutely amazing experience! The overall art style, the character designs and personality, hell even just Ellie herself really stood out and actually got me to read dialogue for once.
If I had to give any suggestions (not including onces that others have already said), I would love to see more dialogue both from Ellie and other characters, as well as unique art of Ellie eating the various snacks, the description of her drinking her favorite milkshake is just so cute that it really makes me wish I could actually see it. Lastly, as sort of an addition to the last suggestion, a small chance for Ellie to eat a random snack in your inventory either at the end of the night at the hotel or potentially replacing the random soda/chip bags found in the car. (Though I will admit this might affect game balancing, assuming that's relevant at all).
Overall this was easily a 9/10, and could easily become a 10/10 with just some small changes. Would absolutely love to see more, both of this game and Ellie!