I don't know if you can call what they're doing smiling.
Alta's Trellis face failed. Trellis' face is still terrifying. Alta secretly wants to run away and sob.
Soup is trying to trip Tarin because she ran up to talk to Yoru and left him all alone ohohoho
SOUPAlta: Smiling isn't supposed to hurt, it just looks really scary when you do for some reason... *She smiled normally for him.* Most people smile like this, but when you smile it looks more like... *Alta pushed her eyebrows together and tried to grin as wide as she could.* This- it's not normal, see?
Trellis: *blinks a little, and tries to smile again, with less teeth and while raising his eyebrows. This time, he just looked silly, and he tried opening his eyes even wider than normal, which gave him a look like that of a frightening, but surprised person* Like this?