MTV about the possibility of returning for Kick-Ass 2. Goldman states that she more than likely won't be involved as a writer but as a producer. Matthew Vaughn could end up as a producer too and is currently talking with someone who could end up writing/directing the sequel.
“I think the only thing that is fairly sure is that right now, Matthew
doesn’t have any plans to direct it. He and I are not currently talking
about writing it either. It may well be that Matthew oversees ['Kick-Ass
2'] in a producer role, and I may also be involved in that capacity. I
know that there is somebody that Matthew has been talking to who would
be interested in writing and directing that. That would be cool.”