Even still, if you watch some of her bits when she'd do her St. Olaf stories, they were legit laughing. There's one she tells about a herring circus (S1 E25 just FYI) and during the entire scene, you can tell that Bea & Rue are legit trying to not laugh and break the scene, which makes it even better.

I don't know how Betty pulled off some of those stories without laughing.

I liked all the girls equally, but Sophia holds a special place in my heart. Just because I want to be a rude ass old lady like that some day.