I cam see killing her as bullying, but that is really a stretch.
He has sexual issues and who knows why.
What makes a child abuse pervert?
A relative who counseled pervs for a couple of years until she could no longer stand their justifications for why it was OK to rape a 4 year old, etc, said that it was emotional abuse that made child sex offenders, not being sex abused themselves.
I found that very interesting as it is really hard to report and do anything about emotional abuse,
My relative counseled the worst of the worst. They were the civilly committed sex offenders,
They never ever took responsibility for what they did. It was always someone else's fault,
If you ever meet anyone who blames everything on someone or something else, run away as fast as you can.
They may not be a criminal, but they have plenty of issues that you do not need