If my aunt got married and her husband already had a daughter that you have only meet a hand full of times would it be disgusting if we hooked up??????
No because you are not related by blood. only marraige.It would not be illegal anyway,what you intend doing may be regarded by some people as disgusting.
Nah not at all bro. You too aren't related in the slightest. She's your aunt's stepdaughter, that's nothin :) My friend was once with her stepmother's nephew :P