Request a physical interlibrary loan or a digital loan via Open Library. For personal ownership, buy the Kindle edition and export to PDF.
What if the user is in a country with different copyright laws? The user might not realize that. So advising them to check their local laws. Also, maybe list specific stories that are public domain if the full collection isn't available.
A complete volume of Bowen's short fiction offers a vast trajectory of her artistic evolution. Several standout stories demonstrate why her work remains vital today: "The Demon Lover"