Karen is informed by owl that she's a prefect. She writes her friends about that, of course.
year five
"Did you, um, because everyone said you shouldn't ask one girl for help asking another girl out -"
"I, um, is acting like you didn't say anything actually the best thing I could do or just the - not worst -"
planetarium
"I w-wasn't ever going to say anything but I couldn't th-think why she wouldn't go out with you unless - so - but -"