I've posted before about my in-laws favouring my eldest 2 DC's over my youngest two DC's (always taking the eldest two on days out, sleepovers, etc, but never asking the youngest two).
Well finally this weekend they asked if DC3 would also like to go over. I'm not fussed about DC4 as she's still a bit of a handful so best to stay with me.
So DC1 and DC3 are collected while DC2 and DC4 stay at home with me. I thought they were going back to the in-laws house and would play around there for a while, maybe go down to the local play area. All the stuff the usually do with the DCs, therefore I didn't ask what their plans were.
On returning them that evening I asked DS3 if he had had a nice time, and he said he had been down to the park. Lovely, smiles all around. In-laws go off home.
On speaking to DS3 later on it actually transpired the in-laws had taken them to visit a family member who we have been NC with for the past few years. On leaving this house my in-laws told the DCs not to tell anyone they had been there, so they absolutely knew they were in the wrong.
DS3 said he knew this was strange and apologised for lying when he said he had been to the park, but that the grandparents were standing behind him so he had to lie. He was in floods of tears but I reassured him he had done the right thing by telling me the truth.
My DH is definitely going to speak to them about this over the coming week, but I'm just so angry that they took them somewhere they knew they shouldn't have and then ASKED MY CHILDREN NOT TO TELL ME!
I really don't want to fall out with my in-laws but how do we word this conversation? I need to use some diplomacy but I want to make it clear in no uncertain terms what they have done is wrong!