I am so sorry that you have already suffered something so traumatic once and that you have to go through it again. Thank you for taking the time and energy to channel your pain into a message that will hopefully help wake people up to the fact that they really need to appreciate the people they love. As far as how to react when you see here, I obviously don't know either of you so it would be hard to give great advice. But my gut tells me that your answer is in this post. Tell her what you said here: That it was great to feel the connection you have shared recently, how impressed you are by her strength, how happy you are that she found happiness with her former coworker, and that you are using your situation as a spark to spread the word to the world that people should love, cherish and appreciate their parents. Let her know that is how you feel about her. Perhaps knowing that this pain may save others from similar pain would help a tiny bit. Stay strong. Human beings are incredibly resilient creatures. You can make it through this.