[That makes two of them - she's never had a friend just forget her like this. It hasn't occurred to her that the whole "multiple worlds" thing could also include variants of the same world yet. As it is she's very confused. And starting to hurt a little. And maybe panic. What happened to her Warden? To her friend?]

I know them because they happened? Because I was there?

[She searches his face for any sign of recognition, or for any sign of anything off. She swallows, tries to seem less frantic but doesn't entirely succeed. This is just too far outside anything she knows how to deal with.]

You really don't recognize me? Katherine Amell? Formerly Irving's own apprentice? Commander of the Grey? Your friend?

[Definitely did not succeed at not sounding frantic. When she trusts someone the way she trusts Anders, she's counting on them to not do things like this.]