The speaker is talking to their mother after revealing something painful, though the poem never says what it is. The speaker shares only "a little," and the mother reacts as if she has been hit. That reaction shapes everything that follows. The speaker has to manage her feelings while dealing with their own.
The tone is tired, careful, and quietly frustrated. The speaker asks for honesty and understanding, and also tells the mother not to get defensive, since she "isn't on trial." There is real tenderness in the line "Just know I know you didn't know," which shows the speaker isn't blaming her. Still, the speaker doesn't trust her to handle more. The final line, "Lets just pretend that this never happened once more," carries the sadness. The words "once more" suggest this has happened before, and that silence has become the speaker's way of protecting both of them. The mood is heavy, guarded, and lonely.