Adywan, or anybody making an edit of ROTJ, is free to use these:
https://drive.google.com/drive/folders/1zlE34aGJd-yL0S_f52YbJwPko4fPAUQb?usp=sharing
If for whatever reason these two particular takes of the line aren’t up to snuff I’ll add more.
There is a canon comic that further justifies that Vader should say “your mother” instead of “Obi-Wan.”
It’s from Darth Vader #5 from 2020, and it’s part of a storyline that takes place between TESB and ROTJ. Right after communicating to Luke from the Executor at the end of TESB, he goes on a vengeful mission against those who tried to hide Luke from him. And as he uncovers secrets from Luke’s past, Vader encounters secrets from his own past. He ends up at an abandoned Polis Massa, the location of where Padmé gave birth to Luke and Leia, and died soon after. There, he finds a damaged midwifery droid, and with help from a droid he travelled with, ZED-6-7, accesses her memories and finds a holo recording of Padmé’s final words saying there was still good in Anakin. This spark would start to ignite the light within him. This is the moment when Vader begins to realize more and more, that it was Palpatine’s fault for him losing everything, and making Anakin think everyone was against him. The moment when Vader began to die and Anakin began to resurface. Palpatine sensed that in him when he came back to meet up with him, sensing some grief, which is a light side trait. It’s there that he tortured Vader with Force lightning, and even a choking, to try and bring him back to the dark side. It also explains why he’s not as angry in ROTJ, and why he said “I MUST obey my master.”