A-Terms of Consistent Confusion

Aatman- the individual soul
Ahamkaara- the ego, who we think we are
Anaatman- the non-self

in alphabetical order.

These terms are confusing, I was reading on the wikipedia that in Buddhism:

Ātman (Sanskrit: आत्मन्) or Atta (Pāli) literally means "self", but is sometimes translated as "soul" or "ego".

On the other hand the wikipedia states, which I believe is what this yogini is going for:

The Ātman (IAST: Ātman, sanskrit: आत्मन्) is a philosophical term used within Hinduism and Vedanta to identify the soul. It is one's true self (hence generally translated into English as 'Self') beyond identification with the phenomenal reality of worldly existence.

Therefore, the soul and the ego are not the same--that is the soul is aatman, and the ego is ahamkaara. I like this reasoning for separating the two terms and not collapsing ego and soul into one concept (again from wikipedia):

In Hindu philosophy, even though it is not discussed in great detail in the Bhagavad Gita, Lord Krishna says to Arjun that ahamkara must be removed. The reason for this is that the Self is not (cannot be) present when one is in a state of ahamkara.

Thus, in alphabetical order:
Aatman- the soul
Ahamkaara-the ego
Anaatman- the non-self