Originally Posted by Xerexsus
Even if she is mute she still has thoughts and since summoners and champions are telepathically linked she isn't speaking, she's sharing her mind.
The lore of LoL has stated that summoners and champions are linked so if the concept of telepathic communication bothers you you may want to avoid the lore altogether.
Then why is Rammus silent? Ok, I can understand Rammus not having any language originally, but he's clearly smarter than the average 'dillo. Seems like he would have learned. Furthermore, if you're telepathically linked with a champion why would you need to speak the same language as them? Seems like the thoughts and ideas would be translated on their own.