there's no way irl if vincent spent all that time blind and in her presence that he wouldn't immediately know it was her from the sound of her voice. losing a sense heightens your other senses. his hearing would be excellent. it's a survival skill. he would have recognized her immediately. i hope that's the case and he's just pretending not to. although calling her ugly right off the bat even as a joke is too cruel considering how insecure she is.