Well no she still had powers they just never explored them or explained what they were. I think that was the one thing I didn't like in terms of them making Cordelia a demon. They made her one but they never explored it and then she got possessed by Jasmine so they really never explored it and then she went into a coma and died. I would have liked to see more about her being half demon and what that really meant for her and what powers she may have had and potential side effects, and why her visions didn't hurt at all, but Doyle was also half demon still had major pain