Maeve's missing piece of brain changes her personality and makes her unstable. She becomes much more violent, sensitive, apathetic, and she sees and hears things other people don't see. She creates special lenses that help her see even more things and it freaks Claire out.
Maeve continues to have that lisp she had in that one comic. The nerves in her face never fully healed.
She's blind in one eye, and the never fixes her goggles. Claire begs Maeve to fix her goggles and to wear better safety equipment, but Maeve's excuse is "There's nothing there to protect."
Maeve uses a cane now. She can't walk on her own after Vincent used bone and tissue from her leg to fix her head.