[ She's been contemplating this, yes, ever since she got her
ass handed back to her by Vanitas. She's lost, sure, many times in fact... but this one in particular... ]
How... when do you know you're strong? That you're not weak?
[ She might end that last sentence in a bitter hiss. Sure, she's lost, but when it involves her friends (and Pokemon), it becomes another thing. She couldn't beat Vanitas, came out even more battered, and well aware her appearance would worry friends. So lately she's been hanging around the roof of Goldenrod City's Department Store.
It sounds like she's going to say more, but whatever it is dissolves into a sigh and stops. ]