Part of Reno's dominion is very similar and he'll feel right at home, at least until people start shooting at him. He will absolutely help her fight off randos.

And whenever he does find out she can sing, he'll try to coax her to do it. First out of curiosity, second because she's amazing at it and he'll be super impressed. Third because eventually it's going to turn into that canary call that is both fascinating and frightening.