Good idea, dog

That has helped me a lot when I just can't verbalize, maybe too embarrased, or not ready for what kind of facial cues I'd get. Also letter writing is good for both, the writer gets more mental time to put down their feelings without interruption, the reader gets the time to read, and hopefully digest the whole thing, and they can go back and re-read it, if it hadn't sunk in yet.
Just my 2 cents. Hope things are going alright.