"Incest" is technically the right term. And given the family attitude to hygiene it soulds like a pretty unpleasant business, but I would think worse of a father raping his daughter than what happened in this case.

It drives me to wonder whether Ireland still has the old UK law position (at least I think the UK has updated the law) about "rape" - the definition used to be "It is an offence for a man to rape a woman".