Rita appears to be suffering from "delusions of persecution".
Delusions of persecution allude to false convictions or recognitions in which a man trusts that they are being treated with vindictive aim, antagonistic vibe, or badgering – in spite of huge proof to recommend something else. Envision awakening and suspecting that your nearby neighbor was plotting to slaughter you, or that your companion had sprinkled some toxin in your morning coffee. These are two or three situations that may happen for people afflicted with persecutory delusions.