Judgment Day will not be as terrible for any as for the Catholic who readily and zealously attacks what may be the work of the Holy Spirit. No habit is more dangerous. If you desire the favor of God, then tremble at the thought of speaking against an alleged private revelation that is neither explicitly condemned by the Church nor blatantly heretical, and do so only if there is absolutely no uncertainty that this is what you must do; lest you become just another black mark in a future book on the Lives of the Saints.
Do you want to stand before God and have Him demand of you an account of why you provided more obstacles to His Will being done on Earth as it is in Heaven than did all the abortionists, terrorists and homosexual advocates?