It's good to defend yourself as necessary.
Bonnie is at school and a classmate keeps physically bullying her.
Bonnie wants the abuse to stop.
Bonnie decides to take a stand against the classmate and gets into an altercation making promises to do it again.
Bonnie decides that if she ignores it that it could stop, so she just hangs her head down when she is bullied.
Bonnie scares off the bullying for good and feels more confident in herself.
The classmate bullying Bonnie sees it as a sign of weakness and teases Bonnie even more.