The way she explained it after the incident ended, it was in part because she had a long history of dealing with criminals. She figured that even if it was entirely on accident that I was swooning over him, he still had something to gain from the whole experience.
And looking back, I'd always been suspicious of others, even if they seemed friendly. Aldonza knew this, and the fact that I wasn't giving him the same cold shoulder... *clears throat* ...so to speak... anyway, it was setting off some alarm bells in her mind.