I notified my landlord via certified mail on August 1 that I was vacating the premises in 30 days. She had not picked up or gone to the post office to retrieve this letter until August 11. Now she has sent me a 3 day notice of eviction (on what grounds, I do not know - I paid August's rent on time, and every month prior, and I have created no violations to rental agreement - I'm an upstanding tenant). Can she do this?