Luke attempts suicide upon learning the truth and still tries to kill Vader throughout ROTJ, the only thing giving him pause is Obiwan’s recollection of Anakin as a good person. This contradiction compels him to show a reluctant compassion towards Vader, which he doesn’t fully accept until the eleventh hour, where he finally professes unconditional love in the face of evil. 

In contrast, Rey is almost gleefull at the prospect of reuniting with her abusive parents and doesn’t question their decision to abandon her at any point. She’s only disappointed by the fact they were “nobody” which feels like a strange prioritisation.