Beat of Temptation in An Enchanted Season anthology (Psy-Changeling, #3.5) by Nalini Singh

Young Tamsyn has always held a special place in her heart for her powerful fellow pack-member Nate. But as a dominant male leopard in the pack, the more experienced Nate doesn’t want to trap Tamsyn into the fierce demands of the mating bond—a bond driven by the animal within—when she’s hardly had the chance to grow into a woman. But Tamsyn knows what she wants for Christmas, and she’s going to get it…