Vegeta wouldn't call it gentle. What she saw as gentle, Vegeta called control. He could break her in half, yes, but could and would were two entirely different concepts, as was should. There were things he did under Frieza's command that he wished he could take back, things Goku and his army of insipid idiots would never allow him to forget, but they hadn't been actions that were his own. In spite of what they may thing, he knew the difference between right and wrong.

He was just a dick about it a good portion of the time. (Kami forbid that someone notices that he gives a damn about someone other than himself.)

"Stop that at once." His eyes narrow, but the irritation in his voice isn't as thick as it could've been. "You act like you know things. You don't."