You're an adult, and I can't tell you what to do, but when you avoid discussing issues concerning our children, I feel frustrated that your dislike of me prevents you us from doing what is best for our kids. I am sad that you continue to choose rigidity over flexibility as well as silence over communication.I feel alarmed and know with absolute certainty this is not healthy for our children. I want what is best for our kids: flexibility and communication.
I have been flexible in the past and I stand ready to be flexible in the future. You have a perfect opportunity to show flexibility now by allowing S10 to spend time with my dad during your parenting time. We both know that nothing else is going on the day in question. If you choose to prevent him from going with my dad, I will continue to follow your lead and remain rigid with your requests. I will also follow your lead on limiting the contact with your family during my parenting time.
For what it is worth R2C here is my thoughts on this. Just taking out things that seem more petty and almost name calling. Just tell her your stance with less emotion.
"Seek first his kingdom and his righteousness, and all these things will be given to you as well" Matthew 6:33