That picture seems to be from an alternative ending that was filmed, where Adrian was there, and he picked her up.
If they put that picture on a steelbook, it should've been on the disc as well.
I haven't seen these since I was a teenager, but for some reason it feels as if I've watched that unseen and unused ending, that's how the mind plays tricks on you, how you can retroactively convince yourself.
Anyway, it feels right, it should've been the ending. Maybe it was used in some cut...