"Don't do that shit here! Not with my family."

That was the moment Lestat knew not to ever mess with Louis'family. The way he gazes at Louis after calming down... he understands that there's no going back if he ever harms Grace, Paul, or Florence. It's such a different family dynamic to Lestat. There is so much love amongst the Pointe du Lacs, so unlike his own human family.

That's why I don't get those fans who still believe Lestat caused Paul to jump off that roof. I can't see him purposefully doing anything to cause Louis the kind of emotional anguish Louis experienced after Paul's suicide. Lestat knows exactly what Paul means to him.

No matter how Grace or Florence or even Levi treated him after he was turned, no harm ever came to them. I think that was a promise Lestat made to himself the night Louis had him over for dinner to introduce him to the family.