Gohan might see it as he's explaining about ki, a sort of flash of recognition in her expression. Something about it seemed familiar to her, did it have something to do with Personas?

"Alright I'll give it a try!" She sits on the ground cross-legged, closing her eyes.

However despite her recognition she still makes the mistake of just trying to brute-force it. Brows furrowed in concentration as she tries to force something out that she doesn't even know where it began.

She groans in annoyance "I think all I'm doing is giving myself a headache, got any other tips?"