[GAMEPLAY] Lux audio inconsistency

Hello guys, I'm more of an audio person. I like to play League of Legends instead of other MOBA games because sound and voiceover in LoL is just great. But here is my complain: 1) casts Light Binding and misses an enemy champ but hits minion. She says "Gotcha!" :D I think there is no reason to say "Gotcha!" if she misses an enemy champion. 2) On the lane with no friends around Lux casts Prismatic Barrier. She says "I'll protect you!" :D She is talking to herself? Is it by design?