I figure that Sybill is probably hiding a lovely figure under all that flowy material she's always swaddled in. :D
The sort of relationship that comes from emotional attachment does require a degree of trust, something Alastor is famous for not bestowing easily. I decided that if I was to portray him in a truly intimate relationship, then I needed to show him finally giving his trust to another; removing his leg, allowing that vulnerability, seemed the right move to make. Thank you! I'm glad you liked the drawings. :D