In 1990 she spent six months at the University of Michigan, and in the following year she was appointed Professor in the Mathematics Department at Rutgers University, spending two years there.
Sa 1990 siya ng anim na buwan na ginugol sa Unibersidad ng Michigan, at sa mga sumusunod na taon na siya ay hihirangin Propesor sa ang Mathematics Department at Rutgers University, paggastos ng dalawang taon doon.