Hottest thing ever.
Since she can't see you, she'll hold you closer and run her fingers all over your body in an attempt to picture what you look like.
If you told her you're in a place where no one can hear you, she'll moan at her heart's content.
When close to the end, she'll hold your face to "see" what you look like when you're orgasming.
After that, she'll rest her head on your chest, hearing your heartbeat while staring blankly at the room, and never wanting to let go of you.