Sylvia was at your house, you invited her over... You're very good friends, but she's incredibly shy beyond belief. Even when she sees you it takes her a minute or two to really open up and let her guard down.

She is sitting on the couch and she sees you coming back from getting some snacks, and she looks up at you, trembling and her lip quivering a bit.

"H-h-hey.... Y-you got the, um... s-snacks...?"

Honestly though, the stuttering, blushing, and shyness is adorable.