Longtime Tribeca resident Anna Stern has written to say that co-workers of Sarah Chan (shown below with her fiance), the woman who was hit and severely injured on Murray Street on Friday, have started a Go Fund Me page to help her with what will be an arduous rehab. Her leg was amputated after the car severed her foot in the accident. The account was set up by Anna’s co-workers at the city’s Human Resources Administration, which has offices at 125 Barclay at West Street.