I have come to the decision after a situation this week where ExMil really upset DD.
There is a massive history there but this was the straw that broke the camels back. I went to see her today and told her that it stopped here. She won't ever get the chance to hurt my little girl and use her as a pawn to satisfy her own agenda ever again.
How do I explain this to DD. She is so innocent (4.5) and even though her Gran was the cause of the upset this week there is also a massive back story. Like all kids she forgives without a second though and forgets easily. Although their relationship wasn't anything special, she is her Grandmother and eventually she will ask.
How do I handle this?