The power of Guru Deeksha/ initiation

Here is the Power of Guru Deeksha! One of my Pupil got to see Tri Mukhi form of Goddess Kali in his Meditation very clearly with in 9 days of Guru saadhna. While he have never worshiped any from of Goddess Kali Before. Here is the link to get Guru Deeksha from me if you want https://tantrastore.weebly.com/guru-deekshainitiation.html

"Namaste Guruji,
With all your blessings I have started Guru Deeksha and today I have completed my 9th day of Deeksha.
Everyday I am chanting 5 rosaries Guru Mantra.
Today, while chanting I saw a very clear image of Goddess Kali and for just few seconds I saw her with 3 heads. I never worshiped Goddess Kali or not even had a thought of her till now. All of sudden I saw her image while chanting Guru Mantra.
Please let me know if there is any significance of Goddess Kali's presence. "