That's the big big 'if'. Sounds to me like the coaches certainly knew, but of course everyone (including them) are going to deny all knowledge.You can look at it two different ways. If she knew something was amiss and had an opportunity to speak up, yes of course she should have said something. If she learned of the gravity of the situation around the same time as everyone else, I don't see why any statement from her would be necessary. She has a responsibility for stopping child abuse if she can. She is not responsible for apologizing for other people's behavior after the fact.
Fans will each make up their own minds. You look at it one way, but other people have a right to see it otherwise.