This describes a particular and rare kind of drama queen, spoiling for a fight, who fakes sincerity through cleverly crafted and articulated role plays in order to belittle a particular person's beliefs. She does this through gross misrepresentations and ludicrious assertions in general strewn about from the lofty sadle of her high horse. It can also be seen as 'taking the piss' out of someone. When caught out at this game, she will try and justify the argument more objectively; but this is just a cop out.
OMG! Did you hear what Miranda said about Willy's belief in Atheism? She is way too sappholyptic for anyone to take her seriously.
Here comes another sappholyptic drama!