Looking for a book

It's not exactly spanking - focusing more on caning and flogging, but many years ago I saw a sequel to Eric Tieflund's "Captives of the Cane" which tells the story of women captives on an island where the woman in charge (and her children) administer severe punishments. The sequel tells of this original group being transported to yet another island with similar punishments.

I would really like to find an e-book of this sequel.

I haven't been able to find any other books by him, but I did find this review:
Tale of women subjugated through service. A "hired-as-a-tutor," kind of thing, but comes into its own via its island setting and later nod to Pleasure Bound (after all, you've gotta get new recruits from somewhere.)

on http://www.archambault.ca/eric-tieflund-captives-of-the-cane-JLI4753685-fr-pr - so maybe the name of the other book is Pleasure Bound? Alas, there seems to be several books by that name.

I found the book. It is called "The Naked Sisterhood" by Pierre Delashe (at least that's the author's name used in the PDF that I have).

Thank you all for your help.