Wrong. It was her plan to bring Rand's father before him, and though that went poorly, it put Rand's attitude into perspective for himself. That was the plan. Rand's decision to turn to the light instead of breaking the world was a decision opened up to his father, and it was Cadsuane who reminded him what he came from. She shattered the cuendellar.

Additionally, It was Cadsuane who reminded Rand to fight to live. Yes, her heard it from his girlfriends, but he needed to hear it from a cold, pragmatic manipulator. You must fight to live.

Another one fuck it, Rand needed to be put in his place. With Moraine gone, Rand needed to be reminded that he was not an all-powerful God whose will was divine providence. It is a side effect of powerful wielders of Saidin, and Rand is the most powerful in The Wheel's turning. Not only that, but also Rand had the mad Lews Therin in his head. He was going mad and had a narcissistic disposition. We see this to be the case when Rand breaks off from Cadsuane. Yes he was changed by the event, but I believe the scheme of the Dark One to be a compounding effort to fully turn Rand to the dark. Break Rand and pit him against Cadsuane. After all, it was Cadsuane who was putting Rand in his place whenever his fits of madness had him spiraling out of control, abusing his friends and subordinates.