Dead flower

Four days ago someone slid an envelope under my door. There was a letter and a dead flower inside. The letter had the same nonsense as those e-mails written in it. This FifiFlower person said she sent those e-mails so she (Him? They?) must also be responsible for that letter.

They are written in the same manner as their comments. So it must be the same person. Whoever you are you need to stop it. This isn't funny. I'm serious, stop or I go to the police.