It's kind of odd that no-one (in the game) seems to have noticed that the world-wide signal interference, which began with Adel's disappearance, produces static that shows up as unsettling messages.
Still, it was a neat extra titbit about Adel's back-story, which is fleshed out pretty well despite not taking centre-stage for long. They manage to tell us quite a bit about her just in passing, without addressing the topic too directly.