Piano lesson took about $300 and plus one more sport easily allocates $600, leave only $200 for daycare or school, transportation, one art class, food, clothing, and birthday party etc is far less than a child need. I live a frugil life and my children barely goes to summer camp, they stay at home alone in the summer while I work. minimium vocation, we still have zero saving, giving we both work, plus one rental income with no mortgage. my salary is slightly more than your ex-wife got, but when I think of divorce, I knew I barely support myself and not even plus one child. And I live a minimium life, never do cloth shopping, myself always wear old cloth, and my children do 2nd hand cloth. it is not affordable for divorce. your ex-wife has a lot of weakness as I have too. But she did not deserve this. Child life is expensive.
Your ex-wife has problems as we all do. But not there yet