I am so happy that she was reasonable about the bags. Your children shouldn't have to deal w/that issue in school.
As for her being flat broke, well, she needs to learn to manage her money. If a divorce should take place, she needs to realize that you will not be there to save her each and every time she has no money.
As for spring break...enjoy the time you spend w/your children.
I think you did a great job of not taking her bait. Keep up the good work.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.