Charity will love and want to help him to change and be better, because that's what she does. (The girl keeps trying to be BFFs with Lucifer.)
Lilith is all "OH HAI BABY. Remember how we boned those times and had lots of demon babies and then how pop culture made us into vampires? Good times, good times."
Malphas works as an intern at an architecture firm so it should totally be the same one he's at. Because, yay, demons all over!