Don't stop reaching out to your grandson, as hard as that will be..

It is a shame/sad that his mom is such a controlling person, but keep the communication open to your grandson.

Use the baby as a opening....maybe you could send him some baby pictures of your son with a funny story....ex. "hope your son is sleeping through the night your dad always had a problem with that..." Do that as the baby grows. Don't expect a response, there may not be for awhile. But I do think he will eventually respond.

It is hard not to be angry with your son, when what he did seems to have separated you from your grandson and now your great grandson. But please forgive him, and take this opportunity to just reach out to your grandson from one parent to another. Parenthood changes everything.

Hopefully someday you will be able to share the good times that was your son, with his son. And that anger you feel will be replaced by the love and sadness you feel at your son's death, but the hope you have for his family.

I hope that all makes sense (I am really tired). Please take care.