Oh crap, Yin!
It's not looking good on her end, and it looks like she is indeed the reason for Hei's turn to hobo. At least they aren't killing her character by not mentioning her until they suddenly say she's dead later in the series.
And as mentioned in the generic thread, it does indded look like Suou's power is to attract molesting wierdos....
I wonder if Hei's star fading means he lost his Contractor powers. Maybe that field works on the fact that he's not a true Contractoir to take away his powers.