Answer:
no, you can only turn into a witch in sims 2 apartment life. but here's how when you get it
you type in this cheat (BoolProp testingcheatsenabled true) at the neighborhood.
then when you go in the house to play shift click on the mail box, and hit make npc. make a grand high good witch or and grand high bad witch, it Will appear at the end of your property. get you sim to make friends and when it moves in it will bring it's Coltrane you can click on it a become a witch :)