Reads like an Americanized English WWI novel with a mediocre mystery. I might be mistaken, but several things in the story seemed to be there more for modern convenience than any nod to the historical setting. I didn't like the first-person narrative.
An example of a nitpick: yes, we understand that Bess is stubborn and doesn't always do what her father says, but where the heck did she get the money to buy the automobile behind her father's back?
In general, the sense of the money value of things seemed out of whack, even for wartime. Or maybe especially for wartime. Admittedly, this is just an impression, since I have no expertise in the matter.