Here's the summary that I think I'd like to use for the back cover:
On the eve of her thirtieth birthday, Sebrina Cooper urgently reevaluates her priorities, as the sound of her biological clock starts to scramble her brain waves. Subsequently, she engages in a problematic affair with an ex-boyfriend, whom she believes is her God-sent second chance to get it right. His marriage, and Sebrina’s friendship with his wife become inconsequential minor details for the once career-driven good girl, as her sights become set on a different prize.
THE OTHER SIDE OF 30 follows Sebrina’s self-exploration of assumptions, expectations, and inconvenient truths about what she is willing to accept, and ultimately, what she is willing to give up, in pursuit of a life that she fears is passing her by.