Patient Hearts by Rachel Skatvold

Time is precious, but so is love.
After moving back to her hometown as a single mother, Camilla Campbell hopes for a fresh start. She plans to watch her son grow up and run her own animal rescue. However, her plans are put in jeopardy when she’s diagnosed with a rare heart condition. Living on borrowed time, Cami knows she must make every moment count.
Since high school, Levi Foster knew there was only one girl for him, but after an accident left him a paraplegic, he pushed her away. When Cami comes back into his life years later, he is determined to make up for past mistakes. As their friendship grows, Levi can’t help wanting more, but can he convince her to give him another chance?