Apple,
I'm very sorry for your loss. I remember you speaking of your mother on the occasions that we all slip and speak of personal things of importance to us.
I know how it is to be there at the end of a beloved parent's life, and although it VERY difficult to see the last painful moments, you did well for your mom by being with her. I have to believe she was cognizant of her daughters being there and drew some comfort from that.
Be well.