I / wait / my mother / suddenly / woman / look like her / came towards me

A. As I had been waiting for my mother, suddenly a woman who looked like her came towards me.

B. When I was waiting for my mother, suddenly a woman who looked like her came towards me.

C. When I was waiting for my mother, suddenly a woman looked like her came towards me. 

D. While I was waiting for my mother, suddenly a woman whom looked like her came towards me.