My husband's grandmother and I were very close. We hung out and talked everyday. One Friday, we went to breakfast and she told me that her and her husband were going on vacation the next day. She was so excited. The next morning I called her after they had left and told her to be safe, have fun, and that I loved her. She told me she loved me too. The morning after that phone call, we found out that she had a heart attack and died.  
Yes, it hit our whole family very hard. That was in 2013, and sometimes I still pick up the phone to call her and tell her something.
Thank you.