Maybe it would be a good thing to get a written & signed note from your MD telling her facts about the condition you are dealing with. At the college I went back to to take classes (after already having my BS degree) the disibiluties office took the information from my Pdoc & they provided compensation for the disabiluties (required by law) but your just telling your landlord without proof may just sound like yiu giving excuses for your behavior. Getting the MD'S involved puts the law on your side with proof of your condition that you actually do have.

Maybe she is not such a witch but has maybe learned from her own experiences not to trust what people just tell her.