ok, im gonna do this like your a compleate idiot so i dont leave out anything,
when you turn on the game click the magic neigborhood button, and then click on whatever lot you want to put vikki in. then click on the "magic co" set of stuff. then click on the little plus sign that means ohter stuff, or more or something . . . . im pretty sure its there, if not keep searching in all that stuff until you find her cart. then place it where ever u want and there you go.
p.s. did you onoly delete one of them? because i think there is another one in a diffrent lot . . .
hope this helps