I don't agree that it is a change of attitude. That's the point. Unless you can point to her excusing previous instances of surveillance of the intelligence committee, there's no basis for the claim of hypocrisy. It's perfectly possible she is, but her statements so far does not appear to provide any evidence of it.
She can consider the intelligence committee to be in a special position on the basis of its oversight responsibility: Even if every other person on the planet is fair game, she can still hold that the CIA has gone to far when conducting surveillance against the intelligence committee without being hypocritical just on the basis of a belief that it violates the ability of Congress to carry out its mandated oversight role. The arguments she has made about separation of powers etc. are all in line with a line of thinking that makes this a special case.
She can consider the intelligence committee to be in a special position on the basis of its oversight responsibility: Even if every other person on the planet is fair game, she can still hold that the CIA has gone to far when conducting surveillance against the intelligence committee without being hypocritical just on the basis of a belief that it violates the ability of Congress to carry out its mandated oversight role. The arguments she has made about separation of powers etc. are all in line with a line of thinking that makes this a special case.