Derek by Karen Nappa

Sonja Madden knows she’s a submissive. But she is not a Little.

At least, that’s what she tries to tell herself when a gorgeous silver fox of a Daddy comes into her life. Try as she might to resist Derek’s patient, protective dominance, everything he offers her appeals to her on levels she never expected.
Bit by bit, she finds herself falling not just for Derek, but for the Little inside her she’s refused to acknowledge for so long. The more Derek pushes her limits, the more pleasure she finds in their play.
Not everyone is happy about Derek and Sonja’s newfound happiness, though. And when a ghost from Derek’s past comes back to haunt him, it leaves Sonja questioning what she really knows about the man she calls Daddy.