but How can I gain her trust back without begging or pleading?
Consistent positive changes in your actions. COntrol your half of the relationship. Let her control her half.
Three important things are forgiveness,patience and Kindness.
Keep working on YOU. Become the man only a crazy woman would leave. DO not go overboard. Read as much as you can. I practice all my changes on everyone else until they are habit.
Listening, compassion, understanding.
"What is best for my kids is best for me" Amor Fati Link to quotes: https://www.divorcebusting.com/forums/ubbthreads.php?ubb=showflat&Number=2879712