"See you in Hell, monster."
Oh my god I hadn’t even drawn this connection before. I hadn’t even really thought twice about Loki killing the kursed elf. He got his revenge on the individual who had killed his mother. I bet he had worked it out, he knew it had been him that killed his mother and he got back at him. He had to have realized that if he hadn’t given him directions to the other stairs when he was leaving Loki in his cell, his mother might be alive