What Happens to Betty Cooper in Riverdale Season 4?
Betty is on a mission of her own by the end of season four, joining boyfriend Jughead to help Charles figure out the mysterious figure behind the creepy, voyeuristic videotapes going around. At school, after Mr. Honey pushes her to put together the entire yearbook in days, the principal decides not to approve it. Once he also cancels prom, Betty discovers Mr. Honey has cancelled prom at every school he's worked at, and all the students take action by talking to their parents. They get their prom back . . . only for it to get cancelled again.
On the romantic front, Betty is confused about her feelings for Archie after their clandestine kiss, and decides to burn childhood journal entries that portray her love for Archie so she can solely focus on Jughead. She persuades Jughead to write a "monster story" to send as his writing sample to the University of Iowa, which end up showing a dark, twisted alternate reality throughout the entire season finale. By the end, Betty accompanies Jughead to the cabin where Hermione killed Sherriff Minetta, which is the setting of the last mysterious video they received. Once there, they see a TV with a tape ready to be played, depicting their whole group stabbing Mr. Honey to death.