What purpose did knowing it serve? Did we need to know for story purposes? No. Then why have the character make such an unsolicited and essentially unnecessary remark? Do you wear a sign when you walk down the street that proclaims your sexuality? I'm guessing probably not. And if you did, what would be the point? Why would everyone you passed need to know? The same is true here. Why did we need to know? Was it comical? No, she's not Cayde.