
Where leads Hes to think about suicide?

The current one.
If I remember correctly, it's not like she's really suicidal. It's just she sat at a high place thinking what would happen if she unalived herself by jumping and that she's still a bit unattached to the current world/situation. Just so happens that Kael saw her sitting at there and considering the "disagreement" he got extremely worried.
A friend or a foe?