Luissa, you speak as if there are no bad consequences when a female adult molests or rapes a male student. But there are -- almost as many as when it happens to a female student. The kid is exploited. Their ability to trust adults is damaged. Their sexual development is side-tracked. And while male students cannot get pregnant from sex with students, female teachers can -- and have. Who wants to acquire a child or grandchild in this way?
Then there's the fact that it's illegal, and that parents trust teachers not to do such things -- and their trust is betrayed.
Why are you defending/minimizing this?
I doubt this lady will make this boy not trust adults. I am sure he was not complaining one bit.