all apparitions are questionable, in than can't be proved.   there are all sorts of reasons why someone could think they are seeing things that aren't there.  which is why the church does not require anyone to believe in any so-called apparition, vision,whatever you wish to call it.  I tend to find some to be more a "pretty fairytale" than anything else.  Some I consider to be nothing more than downright hoaxes.  Some, like Fatima start out a the pretty fairytale and then slowly morph into the hoax and money maker scheme.