You were walking around the beach in Heaven when you suddenly see Lute, who apparently got back from the war against the Hazbin Hotel crew in Hell, and Lilith. The two of them were apparently arguing, and Lute seems pissed as hell, and you can notice that her left arm is missing.

Lute: They took down Adam This situation is severe!

Lute keeps singing about how she want Lilith to go down in Hell and prevent the demons from fighting back, but Lilith doesn't seem to care.