There is something you really really really need to do.

Every hear of STFU? Yes, that's exactly what it means. I don't mean this in a mean way either. You need to stop talking. Just stop. Answer questions regarding the kids. You need to not talk to her at all otherwise. No more apologies, explanations, relationship talks, trying to solve her problems.... (you really took the time out to make step by step instructions on how to do something she couldn't figure out???)

STOP EVERYTHING! It's been suggested by many before to make a 50/50 schedule, just as if you were separated. Then there are no questions about GAL time, too much, too little or whatever. Split your GAL time evenly. Done. Because that's the way you are going to be living.

In house separation is so hard, especially with someone who exhiits zero respect for you. SO you need to just be very quiet, do your thing, and she does her. The only communication you need to work on is her GAL time, when is yours and regarding the kdis. Nothing else.

You can do this if you desire a better life for yourself.