At Odds With The Midwife by Patricia Forsythe

From high school crush to enemy number one 

Gemma has always been a rescuer. Birds with broken wings, abandoned baby raccoons…anything that needs help. But when it comes to her lifelong crush, doctor Nathan Smith, she has to curb her natural instincts. All of them. Nathan doesn't trust midwives, and he doesn't want her help. 

Back in town to restore the community hospital his father bankrupted, Nathan's just as determined to shut down the birthing center. How can Gemma Whitmire save her center and prove Nathan–and the other critics–wrong? And more important, how can she stop falling for him?