Might have been good to ask if donated books are added to the collection. A parish library probably would have snapped the up! Mine would!!
It definitely takes a while before they appear in the catalog. When books are donated to St. John Library, I check the condition of the books, look to see if they are duplicates, assign spine codes, make book cards and pocket labels, put them in the books, stamp them with the church stamp, assign subject headings, enter them into the database, and then publicize the new additions in the bulletin or on the website. This takes time
And if I'm in the middle of another project which I always am, it takes longer!!!
But, Orthodox Bibliophile, don't worry about your books not being added to that library's collection. God will put them into the right hands!!!