Saving Sunni by Kasi Alexander 
http://www.amazon.com/Saving-sunni-Kasi-Alexander/dp/1936305585/ref=sr_1_1?s=books&ie=UTF8&qid=1346328444&sr=1-1&keywords=saving+sunni
ISBN-10:1936305585
ISBN-13: 978-1936305582
Story Rating: 5 out of 5 paddles
Sting Factor (kink): 5 out of 5
Blurb:
Compared to the rest of her poly family, Jessie Chambers—“sunni” to the local BDSM community—needs to grow up. While her serious sister slave, sage, struggles through college, their master, Sir Rune, insists that sunni needs a job. sunni finds a position at the local goth/kink store, The Fringe Element, and is immediately embraced by its quirky owner.
Things start to get complicated when sunni’s ex tracks her down, claiming he’s found God wants to be together again, and a video of sunni and Sir Rune doing a dramatic scene at the Keyhole ends up on television. sunni must find a way to restore her relationships, keep her master from being deported, take over running the store, and stop everyone else from trying to “save sunni.”
Review:
Saving Sunni is the second book in the keyhole series and I highly, highly recommend reading Becoming Sage before reading Saving Sunni! You will not be disappointed with either story as you get an inside look at the beginnings of a triad/poly relationship.
Sir Rune has decided it’s time for sunni to find a job. Even though sunni doesn’t feel like she has any real skills, she gets a job at a local store that fits her perfectly. As sunni grows up, her responsibilities around the house and at work begin to grow as well.
The problems arise when sunni’s ex-husband begins to make his presence known. More problems arise when video is leaked to the media of an edgy scene between Sir Rune and sunni. Now, sunni feels the need to help everyone while everyone else is trying to save sunni and as you can guess, things get rather heated.