Thanks for posting the link to the 180
You're welcome. Good luck.
Listen, I have always lived by the following: why would I want someone who doesn't want me?
Trying to make it work with someone who has decided they don't want it, well that never works and it just hurts you more. Focus on taking care of you, and being strong for you and your kids, and know that you will be ok on the other side, no matter what happens.
You said you don't know how to avoid her, since you have kids and whatnot. Divide parenting duties, if you can, so you don't have to be in the same room together. And if you're in the same room, engage with the kids, not her. If she speaks to you, give her the bare minimum of an answer, and return your attention to the kids. Don't be hostile, keep it positive in front of the kids. And tell her that what happened last night isn't going to happen. She wants a divorce, tell her she can have it, and as far as you're concerned, that begins today.
You might want to google "in house separation" for more ideas/tips.