She's temp checking SLS. You don't have to respond to her constant attempts at communicating. You can choose to ignore them.
You are hurting more than you ever have in your entire life. Nothing can be fixed immediately. This will take a long time. Just slow down and focus on taking care of you. Detach, 180, GAL and go dark. The only thing you need to talk to her about right now are the kids.
Me: 48 y/o W: 47 y/o Together: > 20 yrs BD: Dec '15, then S 2nd BD: Mar '16, then I filed for D April '16: started piecing