Where to begin?

We had a great week with husband’s family. His son came to visit.I’m afraid his son doesn’t realize how ill his dad really is.
I know we didn’t want to see him leave but he had to go back home. He has a job there. His mother is there. His friends are there.
His life is there. I just wish he were here to help his dad out. I don’t understand this unless he doesn’t realize how ill is dad is.Maybe he’s taking things for granted. I know that he’s close to his mom and i understand his wanting to be there for her. I wouldn’t expect less. My husband’s sister picked him up at airport and took him back. This was their first meeting. His sister is absolutely terrific. i have never met anyone like her. I just wish my own family were in touch.My brother is;but none of the rest of my family.
I have learned to put it on the back burner and let it go. There is nothing else i can do.
This is a terrible situation but it has to be accepted. I don’t know that they will ever understand everything. I”m not sure i do. I can’t help but think there is no forgiveness in this.How i have handled this is by not thinking about it at all. Or at least not dwelling on it.If i weren’t thinking about it then i would not have mentioned it here. My son is not speaking to me nor are my grandchildren.
This has been going on for years;although there was a short period where they did speak to me some.It was so condescending.i felt like they were doing me a favor for awhile.When dad passed i almost honestly thought there was a slight chance but it felt rocky from the start. So here we are. I just get older and the time passes away.
I’m happy for my husband though that his family has come back to him and they come to see us.
I worry about his health.He is not well and right now there doesn’t seem to be a good outcome.I wish i could get through to his son the seriousness of his current status.
We worry about his sister too.She has cancer.