Actually, I thought Fr. Gruner made a very good point: he said he believes the Virgin came at Garabandal because her request at Fatima that the secret be revealed in 1960 was not complied with. Why else for her to come in 1961? It makes sense to me.
That's a false syllogism. Your major premise is that the objective fact of Our Immaculate Queen's appearance in Garabandal should be taken as fact, which it isn't. The only objective facts we have in this case are that:
1.) A group of children claimed to have repeated visitations by Our Lady, and in a few cases an Archangel.
2.) There are some anecdotal reports of preternatural behavior which are used by supporters
and detractors to support their opinions.
3.) Most germane, there were several purported prophecies, at least 2 of which have now been proven
utterly false.The question is not why would she appear to us, and try to manufacture a reason, but to question, based on the evidence, whether anything supernatural happened, and if so, whether the prophecies of that revelation have been borne out. In at least two very important points, that test has been failed. Moreover, I should ask why Our Lady at Beauraing, if indeed she did appear (the Church has, according to some sources, given approbation), why she would say there that her forthcoming apparition (which is supposed to have occurred at Banneaux) would be her last. Food for thought, I suppose.
Especially since the Garabandal message deals specifically with the fall of the cardinals, bishops, and priests, which is what the secret purportedly describes.
That's hardly unique to Garabandal. Christ Himself that it was impossible that scandal should not come to His Church. Some three centuries later, St Athanasius famously said at Nicaea:
"The floor of hell is paved with the skulls of bishops."