Sorry to kill the prescious moment, but isn't it a bit weird that we are saying Happy Birthday to someone who is dead?!
When a loved one passes away, do you not think of them when their birthday comes to pass? I think it's the same thing, except we voice our thoughts. Instead of thinking to yourself about your loved one, you may say in your head "Happy Birthday Grandpa". I suppose this is just us opening ourselves up on the forum, and publicly displaying our thoughts and good wishes for Anastasia, or whoever's birthday it is.
On that note, Happy belated birthday my dear Anastasia, you and yours are truly missed.