The strength of the video is that it relies mainly on the text itself. Faustina's own words are self-incriminating enough. And around the midpoint of the video, whatever got into those weirdly dancing sisters probably didn't have a holy source.

Yes, I was aware of some material from Faustina's diary, but theres' an abundance of material presented in the video that demonstrates a regular pattern of delusions of grandeur, where she has Our Lord placing her above Our Blessed Mother.