If Chell mute? (Portal 2)

In the first part (the portal), subject to fall on the character of pridemate HP :(defective turret ),Chell makes a sound (ay;a) .She probably just wants to talk or something
+The second part I wanted to add at the end of the phrase from the face of Chell ,but for some reason decided against it

She's not dumb, it's a feature Valve. It's like Halva Freeman is silent the entire game. This is done in order to the player at all accustomed to the character and how would have thought the dialogues were painted. Something like that.

Chell doesn't speak for both games. Only in the first part if her cube falls on your head it will icnet.