First post, please be gentle! Essentially my PIL have become more and more overt at attempting to convert my two DDs (aged 9 and 5) to Catholicism. I am an atheist and DH is a non practising catholic who believes in God but not in a lot of the specific catholic beliefs so doesn't go to confession or even church. My PILs live about 45 mins away and see the DC about once a month. Over the summer they have had them for two individual days and are due to have them for 36 hours (ie 2 days with a sleepover in between). They all love each other very much and enjoy each others company.
DH and I had a difficult conversation with PIL a few years ago, in which MIL got very upset - we essentially explained that we are happy for them to talk about their religion, provided they present it as their belief or their faith rather than present it as fact. MIL thoroughly disagreed with this as she believes it is all fact. They eventually took our views onboard and stopped ramming it down my DD1's throat (DD2 was too young at the time to understand). However, over the last few months, MIL has started again. They have always bought them the odd catholic book, which to a certain extent is fine, but she is now following them up with mini "tutorials" as soon as she believes i am out of earshot. I have pulled her up on this a few times.
The last time they looked after the DC for a day, a couple of weeks ago, they took them to church and my youngest has come home declaring that "God is everywhere", doing the sign of the cross all the time and asking if we are going to heaven when we die. DD1 has said that she feels uncomfortable when MIL talks about it ( it is always MIL behaving like this. FIL, despite being an ordained deacon, is far more relaxed about it).
With them due to look after DCs for a sleepover next week, AIBU to ask them to just avoid the subject of religion and not take the DC to church, since they clearly can't stick to the parameters we have set? Or is that mega rude just before you leave your DC in someone elses care? Should I just stop unsupervised access if I'm not prepared to accept their way of doing things? Any advice on how to handle this delicate situation would be appreciated as I am dreading broaching the subject again after last time!
I should point out that DH is happy to do the chat as he completely agrees with me but he is similarly unsure of the best way to go about it to get the outcome we want. I also think they are more likely to listen to me as they will think (correctly) that he is more likely to forgive them.
Sorry for the epically long post but didn't want to drip feed! If u've made it this far I applaud you!