When I first watched this episode, I was very confused about Lestat's motivations for being at the trial. During Claudia's execution, I kept thinking, why isn't he moving? Just do something. Help her.
I understand now that Lestat, at this point, is much weaker than usual for reasons that haven't yet been fully explored. From interviews with Sam Reid, I also learned that there was no way Lestat would miss this trial. However, Lestat isn't a planner—he arrived, memorized his lines, yet was utterly unprepared for what was about to unfold. The only thing he knew for sure was that he was going to save Louis. That was his sole plan.
When Claudia says, "It's never been about me," you can see the guilt and shame in Lestat's eyes. Yet, when she announces her plan to kill everyone in the crowd after her death, he's staring at her with pride.
I believe Lestat did a lot of reflecting while in his coffin, pondering how he ended up in this situation and what led his fledglings to turn against him. I think he was actually proud of Claudia for successfully orchestrating his murder. She outsmarted him, and he had entirely underestimated her. This final act of violence made them equals in his eyes.
However, I don't think Lestat ever truly saw himself as a 'father.' He had no example of good parenting in his human life and this had no idea how to treat a child. From the beginning, he was referred to as Uncle Les while Louis took on the paternal role. Then, when Claudia became an adult, Lestat was forced to regard her as a sister.
The idea that someone could look to him as a father wasn't even conceivable to Lestat. In Claudia's final moments, when she looks to him like a child looks to a parent for help, it is horrifying on so many levels. It shocks him to his core when he realizes that he is her father and that he's letting her die right before his eyes. And even worse, Claudia was right—it was never about her.
