Daughter of Joy by James Harvey

Front cover states: She ruled her lesbian jungle with a bull whip - and the passions that thrilled at its bloddy snap!.

From the back cover:

It was to be a new Lesbos, the stunningly beautiful Stephanie had decided. A paradise isle where her statuesque figure would rule supreme over her lovely young lesbian pupils and guide them in the strange bypaths of forbidden love!

Stephanie Olsen rose dripping wet from the jungle pool and joined the group of naked girls lounging on the bank. her skin was all pink and ivory and her golden hair lay soft and long about her shoulders. her breasts were startlingly large, but despite their giant size stood firm and round fromher body and on each a large, bright red nipple came to a proud point.

She settled herself beside the beautiful, dark eyed Marie. The others pressed close to their adored Stephanie so that each might touch her, however lightly.

They separated into groups of two's and three's and four's and proceeded to make their strange love. Stephanie held Marie in her arms then kissed her violently on her face, her neck, and finally her breasts. Soon, the bank was witness to their naked flesh heaving and breathing in unrestrained passion.

Then Stephanie threw herself on the young girl, plastering her great white body to Marie's, and all was bliss!