No, probably not. Maybe.
It's definitely an incredible example of a cover that tells you something. Not that it's YA vs. adult (in my opinion, this could be a cover for either), not the "tone" or the time period, although it does both of those things. I mean it tells us about the crux of the plot. It hints at the major choices the characters will face. The stakes.
This woman is leaving. She's moving towards something else, which is interesting too, but she's looking back, not forward. It could be that she's being forced to leave something she doesn't want to (reading the synopsis, it seems likely). But it could also be that she's escaping, and the glance over her shoulder is to ensure she's not being pursued. There's so much tension!! It's in the way her fist is clenched against the seat, like she's turning frantically before the last glimpse is lost. She's uncoiffed, rushed.
I think it's thrilling. Seen any good ones lately?