So, when I was talking with Rolia, something she said about yandil kind of made me pause. Kind of summed up in three comments/notions:

Rolia doesn't really have any friends, so that in general she is considered "alone"
Yandil seems to hate her/others (or at least thats the vibe she gets from his interactions with people) merely for existing
She thinks Yandil Deserves to be alone

Possibly, that hate is directly related to her not having any friends. Could relate to the fact that Yandil has no friends.

I found this series of notions kind of odd. We haven't been able to get an extensive description of the murders and their themes like we were able to get from previous police chiefs. (I don't think we have at any rate) so keep an eye out for Stalker ramblings relating to loneliness, betraying/losing friends, or jealousy of other's relations.

on a side note, I'm not entirely convinced Yandil is actually a stalker. Definitely possible, Neo could easily be tricking us with a red herring, (I mean, all the other times the public thought someone was a stalker they were wrong) But what really makes me suspicious is that the confirmed stalker sample black fur could easily belong to Jeddi the bewear, whom Yandil has a very bad relationship with. It would seem very convenient for Jeddi, as a stalker who knows Yandil personally, to us Yandil's personality against him mto make him seem liek a culprit.