Losing anyone is hard. I find that I get very thoughtful when it comes to my parents.. my father when I was 18 passed and my mom just a few years back. I wish I had given more time.. such a simple gift time. Doesn't cost a thing and they treasure it so much. My own children are gifting me with this now.. phone calls, visits.. they know I am on borrowed time. All I can say is if you are so busy you can't take a call.. can't stop in for a visit especially if they are living close to you.. you should think about it and think twice. You can't take back time. I am sorry for her loss. I will gladly send her a card even though I didn't know her. Support in numbers can be a warm blanket in a hard time.