Makes No Sense- Ashley Judd's character killed Monroe

So now that I've finally seen Norma Jean & Marilyn, it makes sense why Marilyn Monroe died- her evil sister (or who ever Judd was) forced her to take the pills and kill herself that night. Marilyn Monroe was a Hollywood legend, almost got Kennedy to marry her and was smarter than people thought. Until this movie released, I had no idea she had this cruel, pale and weird woman living with her and telling her she was worthless. A few questions come to mind-

1. Why would Monroe allow Judd's character to remain in her home? She was rich- where were her housekeepers and security? They could have told Judd's character to leave the premise.

2. Judd's character should have been prosecuted. She murdered Marilyn- and forced her to take the drugs. If it hadn't been for her in the room at the end, Marilyn would still be alive.

3. Marilyn Monroe was a Gemini- they are known to have split personalities.