Not one of my favorites, same with the author's other time travel books. (I've read three and this is the "strikes-you're-out" one.) I much prefer Eugenia Riley and other authors who don't go berserk with the back-and-forth from one era to the next, which gets really annoying.
This book was no exception, but I caught on to what Ms. O'Day-Flannery was trying to say with the weird side trip to the 1950's, where the h rescues her mom from getting boned by her abusive dad, yet still managed to exist. The h's prayers to God give a hint. Humans create bodies, God creates souls, so even if her parents never got together, she'd still exist, spiritually, and would be free to live her life in another place and time. (I'd have included a new set of parents, but that's just me.)
BTW: a botched abortion??? In the late 20thc???? GET REAL!!! No need for backstreet docs anymore! And if someone did something wrong, she'd have sued their asses and obtained a 7-figure bank account!
Wouldn't it have made more sense to say she had endometriosis or some other med condition that caused infertility? But since this is an author who has people going back and forth through time from one era to another at a hat drop, I guess that'd be expecting a bit much.