So, I went through different stages with figuring out what the story was about.
In Episode 1 I was convinced that it was her Little Brother (as it only really said brother) who had gotten sick and was in the hospital and that was why he was missing.
The major clue about the fireman jacket did not tip me off >_<
In Episode 2 I was thinking, Oh maybe he just grew up and moved out, that makes sense, and it can be difficult to cope with.