1) You raised an interesting moral question, but the answer you offered was irritatingly black-and-white. Perhaps I'm just a complete bastard, but I fail to see why comforting a (supposedly) traumatized stranger should take priority over bringing my grandfather his life-saving medicine. Of course there's a good case for the alternate view, but I wish you'd shown both sides instead of assuming the accuracy of one.
2) The dialogue of the various characters 'in need' was a bit unrealistic, making them less sympathetic overall. The psycho mom in the last scene theoretically could exist, but her dialogue ("He-he-he...now you will get what you deserve") sounds like it should belong to a Bond villain, not an overexcited helicopter parent.
3) Personally, I didn't mind the lack of interactivity--it felt a bit like a visual novel.
4) The length seemed fine to me, actually. A short, elegant game is just fine if it's well done. To quote Callimachus, "A big book is a big problem."