Firstly , you are making assumptions willow.How would you know that it was created by psi energy? you don't. A psi ball is a energetic construct made out of psi energy , and i believe she is simply feeling and generating energy through her hands.
One usually does not make a energetic construct if he or she does not know what it is.
Also , the reason a psi ball drains you is because you do not reabsorb the psi energy into your body , thus the draining.If you re-absorb it into you , you wouldn't have any problem at all.
And Black Suicide , what you were doing is simply feeling your own energy from your palms and your aura. Such is a simple energy maniuplation technique for beginners.You experienced it due to the fact that your awareness in that area is hightened.
And the feel of energy varies from person to person , depending on what energy you are using and what you do with it.