Most often, there will be times when you will think of your Dad when you do something that closely relates or identifies an action or thing that connects to your Dad as you go on with your life. In time, as it is with your Mom, a time when she'll no longer suffer, yet, in the meantime, being there and being 'strong' for her is a certain kind of 'love' you can freely give. Do hang in there and remember, anytime you need to talk or need someone to listen....you know where you can turn to. 
Do take great care my friend!! 
~RR
