It's funny that listening doesn't move the plot further, since if you listen the first day, your mom gets further with Elli. That aside, all the days Elli isn't available seem like developer short-hand for not having to include her now and then remove her when they add scenes on those days. There are a lot of typos, but none of them are so bad they actual make things illegible, and given the save screen is in German(? Germanic-based, anyway) I'm guessing English isn't the author's first language. For a first update, genuine proof of concept, pretty good. We will yada yada great interest.
Would likewise like to see the route where you shut Mom down, then she steals Elli anyway.