Harvesting the Heart (Jodi Picoult)

Because Paige O'Toole's mother abandoned her and Paige's father at a young age, she has been left with a lifetime of empty, longing memories and curiosities about what would possibly cause a mother to leave her child. Because of the scar left on her by this abandonment, Paige develops a proclivity for running herself. Though she has a wonderful and supportive father, as soon as she graduates from high school, Paige runs away from home to pursue art school...

And then she meets Nicholas. Nicholas, the cardiothoracic surgeon. Nicholas, the (not by much) older man. Nicholas, her knight in shining armor. 

They have a wildly brief courtship and marriage, and just as Paige is about to be on the brink of starting the art school she always dreamed of, they have a son. Max is the love, delight, and the great terror of Paige's life. Overwhelmed by the demands of motherhood, her perceived loss of herself, and by an increasingly unhappy marriage, Paige does the one thing Paige knows how to do. She runs. She runs far away from what and who she has, at the same time running toward who and what she wants. 

I love Jodi Picoult. This wasn't my favorite of her works, as in my opinion it was a bit lengthy at the expense of precision. Still, pretty good for some heavy mom-introspection.