Here's an idea... perhaps you can take a leave of absence for two or three months and see if that helps.
There may be other problems with your relationship, and getting away from the paper might be a way to see that. I don't know about your relationship, of course, but it may be your work as a sports editor may not be the only problem or even the main problem. That is what you would have to find out.
Here's another thought... perhaps you could volunteer at your child's school - that might give you some time around her and would be a way to be around other people.
There may be other problems with your relationship, and getting away from the paper might be a way to see that. I don't know about your relationship, of course, but it may be your work as a sports editor may not be the only problem or even the main problem. That is what you would have to find out.
Here's another thought... perhaps you could volunteer at your child's school - that might give you some time around her and would be a way to be around other people.