So far I have not said anything controversial to my two SC but we are going on holiday and I suspect that there will be times I will be biting my tongue . My DH has told me to treat them like my own but I'm not sure about that ...The two of them have a bad habit of talking down to their Dad as he is very easy going and I can see myself saying "Why are you speaking to your father like that ? " ...I can't quite imagine what the reaction would be . Would be interested to hear how others approach this and whether you are actively involved ?