What sounds best in this sentence?

from the excerpt from the "the dark game" the reader can infer that folke cronholm was spying for the allied nations.

the narrator is saying that the old lady made her feel uncomfortable. you know this because they say "i found that rather irksome", "perhaps it was her being so upright and trim", and "i don't think it was that, because i thought that quaintly pleasant." hope this !