Mom Season 8 - Episode 1 -

In the season eight premiere of Mom , titled "Sex Bucket and the Grammar Police," Bonnie hosts a slumber party for the group to celebrate Tammy's birthday. The episode explains Christy’s absence by revealing she moved to the East Coast to attend Georgetown Law School.

Full transcripts for this episode can generally be found on websites like TV Fanatic and other TV recap sites. Mom - Where to Watch and Stream - TV Guide Mom Season 8 - Episode 1