I don’t think it’s this girls place to do this, and she also has limited information from which she made these public accusations that can permanently cripple the careers of hard working people who were likely trying their best to help her.
If there is a problem, you start with the parents bringing the issue to the school board. If you get nowhere, it is still the parent’s place to follow up on it.
Having an 18 yr old call out counsellers at a valedictorian speech just isn’t right, and it is unfair.