Love died. What's next.

You can try and talk to her. If she will, let her talk and get out what she needs to if willing to try and fix things. Be prepared it might not change anything as her mind might already be made up.

The reality is our laws basically encourage a woman who is unhappy to leave rather than own their part in trying to fix things. Between separation of assets, alimony and child support, if you are the higher earner by very much .. a divorce is like a lottery ticket for her.

Get your financial house in order and don"t take on any new major purchases. Good things regardless, critical if this leads to ending the marriage.

You do not mention, (and I am not prying,) what you were in the hospital for. If you were in hospital for an illness you can and will recover from, she has no right to treat you so poorly. If you were in hospital for something very serious and/or eventually terminal, I could possibly understand her anger and/or her turning away from you, but she still has no right ignoring you and treating you poorly.
IMO, If she has totally shut you out, you could try getting a visiting nurse/nurse's aid or you could suggest to her some marriage counseling.

Sorry about this, it's very upsetting and it seems so many people have marriages like yours. Maybe you need to go back to basics and date each other? Take her somewhere she needs to dress up and you can remind her what you once had.

I'm really sorry you're in this position. It really hurts to suddenly feel abandoned especially having done nothing to deserve it.

Marriages often go through a crisis point after illness.
Some couples fall apart; others rebuild something deeper than before.

Right now, you’re in the raw, unprocessed middle.

But nothing in what you’ve said suggests that this is permanent or that the relationship is beyond repair.

It's lovely of you to think about her feelings, but it's good to think about your own in this situation.

You've identified that she's checked out.

So now it would be good to figure out what the next positive step for you is. 💙

Sorry you're going through this

Were there underlying issue(s) before your hospitalization? Sounds like something changes, but what was it? Has she asked for a divorce?

Your profile is new, no other posts. Do you suspect here of having an affair? Many marriages wake up one day after the kids have grown up and now an empty nest, only to find out the spouses have drifted apart, but not noticed for the focus on the kids.

Sorry this happened, but it is not uncommon. You will survive!

Somehow I don’t think this just happened out of the blue. Things like this die slowly and you just happened to come back with fresh eyes to see it.

I recommend patience and quiet confidence.

Seek therapy, either with her or by yourself.

🙏praying for restoration

You need to practice detachment.