I’m eight years into co-parenting DS10 with exH and in the main, we get on ok. DS10 spent the weekend with his Dad and he said that on Saturday, his Dad and partner went out for the evening (only until 11) and left him at home with partner’s daughter who is 15. DS said it was ok and he was still awake when his Dad got home and he went up and read him a story. Is a 15 year old mature enough for this responsibility? It doesn’t sit right with me but I also know it was his Dad’s weekend and therefore his right to make the decision.