Final answer:
The narrator's friend feels a sense of immediate safety upon arrival to the school.
Step-by-step explanation:
The narrator's friend feels an inexpressible sense of immediate safety when he arrives at the school. This is indicated by the narrator's description of feeling safe in the friend's presence and losing her fear of the surroundings. The description of the friend's tall, black-garbed form filling the door adds to the sense of safety and protection.