One important thing to note is that while you are meditating on the DIVINE mother MATANGI, she may give her darshan in the form of an ELEPHANT to your "mano netra". At this time do not be afraid of the fierceness. Just keep calm and SHE (elephant form) will bless you with the trunk. Also note that take her blessing by praying to her feet.
Whether she has given darshan or not, nevertheless, keep chanting the mantra.
This is my experience.