@comaddox Question for the philosopher: If you give a congrats on Twitter to someone who is not on Twitter, did you give a congrats?
Great question! This stems from George Berkeley's A Treatise Concerning the Principles of Human Knowledge. The root of it comes down to whether we can truly say something exists without direct experience of it. In the case of whether an unheard tree falling in the forest makes a sound, the answer is no. It makes vibrations, which would be percieved as sound were someone listening.
Now to your question. What is the essence of a congratulations? In your case, the congratulations is heard, just not by she who is being congratulated. Does that matter? Perhaps. As a consequentialist, I would ask you what your intention was. It seems there could be three possibilities (and likely more):