i didnt read the story and i dont know the details but i will answer blind!
when i was getting divorced someone told me, “you couldnt have been worse than my husband, i put him in prison for what he did to me!!! today we have a great marriage” she was with her husband when she said this to me.
Divorce is NEVER a solution, it is switching one (or more) problem for many others, especially when children are involved.
if there is a realistic chance for them to get back together, if he is willing to go for help, therapy, whatever, if there is a possibilty that things will get better, then my advice is to get back together.
divorce wont run away, Beis Din aint going out of business any time soon, there is always time tomorrow to get divorced why run into it.
dont rush into divorce, definitly dont listen to those who tell you to get divorced, either they dont know what it means or they are looking for “sisters/brothers in sorrow”