IKR?! It makes my heart hurt so YOU HAVE TO HURT, TOO. I am aware that Lestat is one of the biggest antagonistic monsters in canon, but that’s not all he is, and when he’s cut down like this, you can’t help but feel bad for the poor guy. 

Let me torture y’all a little more…

^HE THINKS SHE FLAVORED THEM FOR HIM. He’s being slightly cute here with the way he’s gesturing theatrically to her, don’t think about all the times he and Louis “acted Shakespeare together for Claudia’s amusement…” He thinks she went to EXTRA EFFORT to make this peace offering special for him! Well, she did, but not the way he thinks ;A;

^(Just a still of Claudia bc of reasons) Then she basically tells him it was dead blood* she gave him, which, in the context of movie!IWTV, is apparently dangerous to them. On her first kill he told her that they always have to “stop before the heart stops,” but he doesn’t say why. So now he knows she poisoned him, and the laudanum is working, bc look how incapacitated he is:

^It’s probably no accident that his right hand is in his crotch there, he’s been emasculated, brought down by his own daughter *cries* 

^That whole right arm is just not functional, he tries to put weight on it, and it just collapses ;A;

Even if he COULD grab her at this point, he’s in no shape to try to fight her physically. He can barely even talk!

In the context of the scene, there’s no going back for her at this point, she poisoned him intentionally and there would have been no way to regain his trust. All the sadness.

Asterisked stuff under the cut.

*In the film, it’s implied that the deadness of the blood is what’s incapacitating him, and that’s fine, for the film. He taught her this in her first kill. But in the books, it’s about the laudanum** that actually would have a strong effect on him. If Louis had been able to put Lestat in his coffin, Lestat could have slept off this opiate dose and been fine the next night. 

**Laudanum is not just any drug, it’s a BAMF (Wiki): 

“Reddish-brown and extremely bitter, laudanum contains almost all of the opium alkaloids, including morphine and codeine, and its high morphine concentration makes it a potent narcotic. Laudanum was historically used to treat a variety of ailments, but its principal use was as an analgesic and cough suppressant.”

One more note on the dead blood – if those boys were truly dead, Lestat would have known just with his own senses. Vampires can’t stand to be around their dead. But we’ll have to just ignore that ;]