Being close and there for your mom is a precious gift from you to her. I send comfort and strength to you. It is as difficult a time as life can offer to us. As the memories of this difficult journey dim, you will know that your time and care given will make the lasting memories ... the many little things you did to help and show your love ... and these memories will be beyond value, of comfort and ease for your heart.
For your mom and dad, may they rest in peace. The pain will ease for you. The memories will be a big part of who you are from now on. This, simply, has been my experience, that I share. Be kind to yourself.