It's highly unlikely though..I know its just me but I am pretty sure that pudding is not like that.....she is just pretending to be like that as by this way, sanji will have to break the marriage.
That third eye was being hidden for a reason.. so as soon as it would be revealed, so would her true evil intentions.. a great literary device..
Some people are also theorizing that it's a great reason for Sanji to finally "hit" a woman.. whether it be Pudding or Big Mom herself.. (I'm not sure about this theory happening myself, but I wouldn't mind seeing it come true.)
So yeah, I think Pudding is officially bad..