glados writes a letter to princess celes
EDIT: To all the people asking, I added the GLaDOS effect. She can't do that with her voice (she just speaks the lines very mechanically). It wasn't in the mic system. I did it using a program called Melodyne then only switched out the bits where she's speaking so everything else sounds normal. (Although the people asking probably won't be the ones reading the description anyway! XD)
Because, really, we all knew it had to be done.
Source video from StrikeLazer0: www.youtube.com/watch?v=7AZSQc23WfE