Here's an odd question. I have a character in a current story that has no vocal apparatus. She isn't a human, but a rather pretty anthropomorphic bunny interacting with humans.
I've been doing something like this.
"Hey, you're a bunny girl!" The human shouted.
(That's right.) The bunny's nose twitched, but her mouth never moved. (How are you this fine day?)
"I heard that in my mind!"
(Of course, silly!) The bunny grinned. (Rabbits don't have human type vocal cords!)
Does anyone have a better idea for this? She doesn't read minds or anything. The words just appear in the mind of the person she's addressing. If they didn't already know my bunny wasn't moving her mouth, they would think they were hearing normal speech.
Oh, and yes. Her female friend, who is futanari, gets something rather unique. The bunny keeps on talking to her while giving a blow job! Oh, the wonders of telepathy!