Meditation is concentration in the beginning. It’s a focus.
Then, in the intermediate stage, it’s an opening, a deepening of one’s awareness but with a focus towards the planes of light.
In intermediate meditation, you’re touching light more deeply than in introductory meditation.
In advanced meditation, you become light. You transcend self, ego, time, space, dimensionality. You merge with the clear light of reality, and you go beyond this world.
The teacher you will be learning from practices advanced meditation. After many years of meditation her consciousness was transformed to full self realization. She merged with the light and became fully Enlightened
Which means she can meditate powerfully and direct that energy towards you, so you too can have blissful meditations.