No. Filing a police report based on the facts you posted is privileged.

Your sister is legally an adult and entitled to make her own mistakes.

Fear of retribution is not a legal issue. Threats are; actions are. Once you filed a police report, your control over the matter is ended.

No, you will be sued for copyright infringement.

Discrimination is more than people not liking your. A lot more, like denial of essential goods and services. Like damages.

Yes, it's called prostitution and the boyfriend is called a pimp.

No one will contact you since that would be against State Bar rules and Avvo Community Guidelines. One thing you can do is use the "Find a Lawyer"...

I would agree it is irrelevant to your landlord/tenant relationship and have never heard such a request in more than four decades of practicing...

Permission to use is given by license and is paid for. You cannot circumvent the IP belonging to others.

A "power of attorney" allows you to act as the agent for a disclosed principal, your mom.