I think I know what you mean TheVeryThing.
I had the same thought about it sounding like the way things were in the village where I grew up, and where my parents and some of my family still live.
It's a completely different scenario there now even down to things like, for example, none of the teachers live locally. The priest has responsibility for a number of parishes, which i would say is becoming increasingly common in rural Ireland. So, even he doesn't live locally.
So the automatic 'pillars of the community' stuff, which would have been the case when I was a child, is completely changed / non existent. That was partly why, to me, it did sound like something from a bygone era, the description by the priest of his visit to the house at Christmas.
Just glancing back through the thread, yes, a private burial for the murderer would have been probably a better way to go. Once again, I emphasise I am not criticising Clodagh's family. I cannot even begin to imagine their utter devastation. On top of their huge loss, they also know that she and her three boys died in the most savage, brutal manner, and how absolutely terrified their final moments must have been.