It seems Ceara is drunk and/or fantasizing about Windsock.
I'm going with both.
Her index finger seems to have slipped from to a "g" in place of the nearby "t". This seems to have registered in her alcohol impaired mind at the point she went to type the last word. Thus, while thinking of her missed letter she hits a "t" in place of an "s" ... since they aren't anywhere near each other.