tenant death in oklahoma

[Alex Gerasimov]

unfortunately, my tenant passed away.   he has left his mother and a child at the property.  Will not charge the rent for this month. Does anyone know what is the correct way to handle this situation? 30 days notice ?  Is there a Oklahoma law to handle this situation? Not sure what to do about security deposit. Dont mind to give it back. but what if property is damaged?