Hey.
I really like the concept of the book "Ex Wife".
And I will be glad to continue the book for you.
But what I really think is that it's your book and no one will be able to write it more perfectly than you. And I think you yourself should continue the book when ever you get time.
But if you don't want than I would like to have a chance to write it but it's up to you so best of luck
I'm also happy that you love writing because I do, too. It's amazing to me when I see someone else who throws themselves out there and at least tries. I'm sure you had to try.