Which detail in paragraph 9 best supports the inference that certain features of the house are totally new to Zitkála-Šá?

[9] From the table we were taken along an upward incline of wooden boxes, which I learned afterward to call a stairway. At the top was a quiet hall, dimly lighted. Many narrow beds were in one straight line down the entire length of the wall. I was tucked into bed with one of the tall girls, because she talked to me in my mother tongue and seemed to soothe me.