my mother was in a car accident 5 years ago and ever since has had short term memory loss, i will tell her something and a couple of hours later she will be on the phone to me asking the same question. She has a diary in which she has to write all her appointments and everything else. She has also become very lazy as in the housework does not get done anymore, before her accident her house was spotless. Her memory is getting worse is there anything that can be done to improve it?