Aw, Beloved CoCo... this is a poignant thread.
Of course, all of us at one time or another has been what we ourselves might consider "too late". The only things we can do as humans on this earth-walk are:
1: Try ardently to live with no regrets (in other words say those things we have been wanting to say!)
and 2: Console ourselves with balming thoughts (it was meant to be/not meant to be; the message reached them anyway, etc.)
It is my personal belief (okay, make that "ardent hope") that our loved ones' spirit hears our "late" declarations. Regardless of this hope of mine (which I know many here would see as complete idealistic delusion) I know that your communique' added love and joy to the intended recipient's children, and that alone is a beautiful thing.
Love,
Baba.