Always SHOW 100% optimism for her and your family :
"You can always talk to me. I love you" "You will always be welcome in my life" "You and our son are the most important things in my life." "I will never turn you away. I love you."
You scored big today at mediation, that could have went really badly. Show some modesty and humility here when dealing with her. Sorry but "none of your business" is hardly a romantic response...don't be rude just be mysterious ok? that likley hurt her, bad move on yoru part, do better next time ok?
Her asking you about wha tyou are doing with church was a HUGE step for her...HUGE...and you said "none of your business?"
She's reaching out to you man and you blew it...NEVER do that again.