I thought Changelings couldn't be around Vampires...?

I'm running Montreal By Night and just noticed the section on one of the characters's secrets.
It reads "Unbeknownst to most, Beatrice is allied with an Unseelie Sluagh named Rake. She discovered Rake going through books in the Alexandrium, and rather than attacking him, she offered to give him a tour.
He agreed, and the two discovered a similar interest in knowledge and subtle torture.
Rake was also intrigued by Beatrice's uncanny resemblance to the Sluagh. The two have exchanged information ever since." - Montreal By Night, page 91.

I remember reading in Changeling The Dreaming that only Malkavians give off anything other than banality to Changelings. If Kiasyd are also exceptions then why were they not mentioned?