I don't think that's horrible. Death is death, but I get what you're saying and why you feel that way.
As for the letter - if your IC wants you to send it, do you have anything to lose? I mean really? Your IC may know more than others do about your situation. I'm a big fan in leaving nothing unsaid, myself. I see life as short and I know in my case, I waited a bit before saying things. I found that holding them back was far more inhibiting to me regardless of what my ex did or did not do. My ex was/is on her own path and what I said or did not say made little difference. I don't think that's the case with you.
Have you read the five love languages? I'm not a huge fan, but it has some interesting thoughts that might be of use to you.
Prayers to you, Lisa.7. And your family. He has a lot of growing to do...
AJ
"Our lives begin to end the day we become silent about things that matter" MLK Put the glass down... "Yesterday I was clever so I wanted to change the world Today I am wise, so I am changing myself."