But most likely not when she was involved with Rand. She may have reported on her escapades with Rand in TGH to her superiors, but I don't think she ever sabotaged Rand. I don't doubt that she sowed discord among his 'followers' who were scheming like crazy behind his back, but her plan was to help the Dragon Reborn, and at that point she'd decided that Cadsuane could be trusted. (I can't quite remember, but IIRC the scene mentioned in the original post is after Verin decides not to poison her isn't it?)

And in the years leading up to Rand's birth and Moiraine's discovery of him, Verin probably killed, tortured, kidnapped and jaywalked with the best of them. But then she was there to help Rand.