When she sees that in Steph, Cass puts her arm around her and pulls her closer, leaning back so they can snuggle together on the couch. There doesn't have to be excuses for this, but if Steph wants to make them she'll let her.

"This is nice." She means more than just the milkshake, of course. "Kind of... making me cold. Can you reach blanket?"

There. Fixed.