Scrying sounds a lot like Prying

[Cadabra]

How it is told, is Cassandra has been practicing her scrying ability by watching another student when they are not aware. Who or when or doing what depends on who you hear it from, but the most common rumor is that she is watching Chelle shop the Talos Boardwalk to confirm another rumor that Chelle shows some skin for discounts.

[Cadabra]

Now the rumor is told as that Cassandra has been watching multuple students, and keeping notes for someone.

[Cadabra]

As the rumor goes through the mill, it is now told as that all of the students Cassandra has been watching are girls. Speculation on who she is giving these notes to and what she gets in return ranges from the practical to the scandalous.