see (one) across (something or some place)
To escort or accompany one from one side of something or some place to the other. Sally offered to see me across the creaky rope bridge, because I was too scared to go by myself. The police officer stopped traffic so the teacher could see the child across the street safely.
see someone across something
to accompany someone across a dangerous area. Paul saw his mother across the field, which contained a number of hazards. Timmy offered to see the elderly lady across the street.