She's a friend. And she's... kind of the one who did all the cybernetics in the first place. Long story. [Shepard looks a little... reluctant, maybe. It's hardly a secret, she's just somewhat uncomfortable talking about the fact that she was dead for a couple of years.]

It's the polite thing to do, let her know I'm letting other people run tests. And she'll know how to handle things if anything starts going haywire.