((((((Dagny)))))) I don't think I would send it. When I read it, I hear holding on, not letting go.
Well-stated, VH -- I do too. Sorry, Dagny, just being honest.
"Letting you go" speeches are best delivered in person, and in RESPONSE to some specific action or statement from the wayward spouse. When it's done in writing, proactively, it comes across as pursuing, which of course is the exact opposite of what you're going for.
But what the hell do I know -- I just ended a sentence with a preposition.