Issue # for what? The Carol Danvers/Ms. Marvel split personality thing? Or the Rouge being KOed and "Carol" taking over?
Here is the Carol/Ms. Marvel split personality scan, I wish I had the issue number handy but it wasn't just one issue. This type of thing was occurring all through her initial series. (please log in to view the image)
Notice how Carol behaves, it's as if she has no control over the change and the Ms. Marvel personality is not welcome.
Even back then, Rogue was still succeptable to psi-attacks. Pre-ninja Psylocke got her multiple times with illusions, disorienting, or outright KO's. Many characters have some showings of resistance, but hard-to-read thoughts are not proof against a legit psi-bolt.