"feedback" here seems to refer to feedback on the scientific paper that is being retracted, not personal performance feedback or anything like that. When I red this first, wasn't immediately clear what this was about.
As such, I find it really quite baffling that someone would be unwilling to share that scientific feedback with her, or who raised it.
I remembered your comment here, so I came back to post this, for what it's worth.
I'm still not entirely sure what to think.