I think this part is important. While we know from the books that Louis is an unreliable narrator, even Armand tells Daniel that he "sanctified him" in his book, but that he is nothing like that.
This makes it clear how blurred Louis's mind is, and it is not exactly a result of vampirism... The book, the series, and even the movie make it clear that, even as a human, Louis tended toward melancholy and, because of that, a certain degree of madness.
He's calm and kind, to a certain extent, compared to everyone Daniel has met so far, and that's why he may see him in such a positive light.
The fact that he had to call Lestat so that he could help him return to reality, that he was so willing to pay and pretend that Claudia had come back with a complete stranger, was uncomfortable, but it's nothing Louis wouldn't do... Honestly.
What I mean is that... of the two, Lestat is obviously the mentally stronger one and the one who is "honest" with himself... Claudia died, he remembers it, he doesn't want to pretend it didn't happen because that would be disrespectful. It hurts him... but it is a mistake he must remember. Claudia is irreplaceable, and despite all his pain and how much he would like her to still be with them... he would never do something like that to soothe it.
This is why, once again, Lestat lives while Louis survives—the difference between confrontation and avoidance.
