To be fair, she was not the one who originated the problem or who hid it under the carpet until it reached the size it did. But, she was certainly the one left holding the parcel when the "music stopped",
She should, however, be judged on her actions, after she became aware of the situation. Continuing to ignore the problem has caused real harm to many people.
I would like to think that had I found myself in a similar position, I would have done the ""right thing" irrespective of the consequences. But then I am not a "team player", so would never have been offered such a role in the first place.
We do not know, how much the government knew, or how much they were influencing decisions. She may well have been lined up as the "patsy" when she was first appointed, and found herself caught between a "rock and a hard place".
Admitting the problem. would certainly have been the "Christian" thing to do, But, compensation for the victims is likely to be something the government will have to pay for. And, they may well have been hoping to avoid this liability at all cost.