Kendrix: She does not quite know what to make of Shinji's emotional outburst. That he could be relieved because she is all right doesn't occur to her - in her mindset, she just did her job and there's no point in worrying since she's replaceable.
Additional Commentary
EvangelionFan:
Rei: "I was having a perfectly good nap, but you had to come along and wake me up. What are you babbling on about, anyway?"
