If you haven't fucked Jade, and/or you're not on Sage's path, the only plausible reason I can think of for meeting with MC is that this is another attempt to get some of that dick.
For one, I think she knows it was MC and his huge cock streaking through the mall—Either you were wearing the helmet (dead giveaway), or Derek was wearing it so she puts 2 and 2 together, seeing how you two are virtually inseparable and are the newest DIKs.
Two, you've spurned her advances on multiple occasions. That plus getting divorced mean she's starving for sex, and MC has become her white whale
Three, MC is the only guy who has taken Gender Studies and not made a mockery out of it, so that would elevate him in her eyes. I mean you
can say "easy credits and vaginas" at the beginning, but come on. MC is still better than Derek.
Four, MC helped Cathy feel better regarding the Cluck, so again that gives him a few points.
But of course this is just speculation. We've had plenty of path-specific previews before, this could be another one. However, it's a little conspicuous to be meeting her in the lecture hall when MC has no good reason to be there, anyone could walk in.