That is really sad, im sorry
I have a situation in my life atm that regrettably has me planning for a similar situation. I always envisioned playing Kite and seguing into Exitlude by the Killers (would work with key etc...)
Exitlude Chords by Killers @ Ultimate-Guitar.Com
It has such a beautiful sentiment, basically that even though it is the end and we have to let go, we can cherish the good memories, while we can let any problems melt away.
Aggressively, we all defend the role we play
Regrettably, the times come to send you on your way
We've seen it all bonfires of trust, flashfloods of pain
It doesn't really matter don't you worry it will all work out
No it doesn't ever matter don't you worry that ain't what it's all about
We hope you enjoyed your stay
It's good to have you with us, even if it's just for the day
We hope you enjoyed your stay
Outside the sun is shinin' seems like heaven ain't far away
It's good to have you with us
Even if it's just for the day