I enjoyed it a lot! I love the expression by screen-shake and, particularly, phone-shake. It made me imagine mom to be very assertive, despite her having no written text. Impressive how well the very minimal interface works within the story!
I expected some sad turn but it subverted this expectation nicely, while still having emotional depth.
Two minor usability problems I had:
- The language selector caused me minor trouble. I though I need to click the language as a link and thats it, but it is a selection and I need to click the "okay" afterwards
- I needed some time until I understood the zipper, I first thought it is a pen. As these things are, after understanding it, it felt natural as it was.