I was watching IWTV (for the second time today) and I thought at the scene in the Taverne du Chat Noir, at the beginning, was Lestat influencing that guy’s mind to not kill Louis? Do you have thoughts on this?

Quite possibly!

Lestat’s Mind Gift at that time was more for when he was directly interacting with the person, but  in TVL he could call a horse to him from a distance with it. 

I don’t know if Lestat’s Mind Gift was ever as fine-tuned as Armand’s, tho, in the sense of bending someone’s will as far as Armand could bend it. Armand used his Mind Gift to manipulate Louis into making a vampire, which was the last thing Louis ever wanted to do!