Towards the end of the book Star Trek: Eternal Tide, the female Q has her powers taken from her, but still manages to teleport herself after screaming really loud.

Icheb was accustomed to seeing the Q work their particular powers in bright flashes of light. This Q threw her head back and uttered a bone-shaking cry that immediately forced every head in the room to turn toward her. When it had ended, her form slowly began to waver before him. The excruciating pain of the effort she was expending was clear, until she was gone.

When she teleports next to the male Q, he remarks that she would be in trouble with the Continuum for using that form of transport. Nothing more is elaborated on this.

“How did you come here?” Q asked of his mother.

She shook her head dismissively. “The power of the Q Continuum is great, but it’s not the only source available to us.”

“We’re not permitted,” Q stammered.

“Like that could ever stop your mother,” his father chided him. Placing an arm around her and pulling her close, he added, “The Continuum will never forgive you for it, though.”

“I don’t care,” she replied.

Does anyone know what type of transport she did? It seemed like the author paid it a lot more attention than if it was just supposed to be a mystery.