What you do isn't as important ad how you do it. If you need to unfriend W then do it, if you need to unfriend or even block her then do it.
If you find yourself still looking at her profile even after you unfollow her, then unfriend her. If you find your self still looking at her profile through mutual friends after unfriending then block her. I did all of the above and I nearly started to unblock her to see posts. I would have then asked her to block me but I got my [censored] under control. I even had to unfollow a mutual friend because her posts still would squeeze a pic of W though.
Ghost, your W and M are likely over but don't you dare give up on you and life. I've seen what you're capable of and things will work out more than fine for you no matter what happens between you and her. So what if you don't see your kids every single day, you will manage and the days you do have them will be amazing. You can't control every part of your life but you can make the most of what's given to you. I haven't seen mine since Thursday and you know what? I had a [censored] amazing weekend meeting friends across the country and when I see kids tonight I'll have an amazing time with them today and this week. Sure I normally have them 4-5 days a week but I took some time for me. Id you get 3 days a week with thdm then you make it 3 days of gold. Dont cry you cant get 7 and then end up giving them 7 superficial glitter days. I know damn straight your capable of gold. Quality over quantity. Life is what you make of it. You can appreciate what you have or sulk and ruin what you do have thinking about what you want to have.
Accept what is, let go of what was, and have faith in what will be