When you listed the area as Toronto, everyone will think it was the Bus Station downtown, as I did. The Scarborough Center is in Scarborough. There is no Bus Station there, it is a pick-up/drop-off area only. You have to use the washrooms in the shopping center. I would suggest going to the downtown Bus Station as it has washrooms and a better chance of getting a seat on the bus.

Thanks. The workers there told her she had to go to the STC mall. Why wouldn't they know where the bathroom is?