I am happy you decided to join this board. Here you will find a wealth of helpful information and very wise, caring, and compassionate people.
I see you have a son and daughter, 9 and 7. And three young adult children, S21, D19, and S17. I am sure thier responses are very different with each age group. How long have you been married?
Good to see you have the welcome posting from job, there are a lot of valuable links in there to read up on.
Posting here really does help. This is a safe place, ask questions, ask for advice, vent, tells us what is going on, as much or as little as you would like. You will receive much wisdom, advice, and suggestions. A lot will seem counter-intuitive at first; it is ok to seek clarification when unsure.
Your W needs space and time, and she is looking for a reason to run. She will attempt to draw you into arguments to fuel her justifications. Remain cordial and calm.
Give her lots of space and time. Focus on you and the children. Work on detachment, and keep moving forward.
I look forward to talking with you.
DnJ
Feelings are fleeting. Be better, not bitter. Love the person, forgive the sin.