I had to report a sexual harassment claim to my employer 3 times before it was handled because the harasser was the boss' son. I was given a negative performance review, change in job duties and a written write up for performance. I was accused of committing the same performance issues that 5 other employees are guilty of but have never been written up for. I was written up as punishment for my sexual harassment claim. Is it not considered retaliation to write me up and not write up other employees for the same offenses?