You need to be documenting all of this. When it goes in front of a judge you will need to show all the paid receipts.
Get a custody (if you havent already) and financial agreement in place. Decide whose paying what now. If you dont you will be sorry. Divide up all the bills now. Dont just pay everything. Get everything in writing. She will take you to the cleaners if you ENABLE it.
She is not stable right now. Protect yourself.
You will need a strong foundation for you and the boys in the future.