Not quitting has always been a big deal for me-- I want to go forward knowing I gave my M every chance that I could have
Don't think of it as quitting, think of it as starting the next, better chapter of your life. I believe you did everything you could to save your M. Maybe it didn't work but as you said you saved yourself and that is more important.
Take care of yourself and you boys. It will get easier with time and you will find happiness again.
Personality is who the world sees, character is who you are