Kingsbury, Karen. Angels walking series #3

"Thorndike Press large print basic"--Title page verso

"Despite needing a heart transplant, Mary Catherine moves to Uganda to work at an orphanage. The only problem is baseball player Marcus Dillinger, with whom she never meant to fall in love. Neither Marcus nor Mary Catherine's friends Tyler Ames and Sami Dawson know just how serious her condition is. Ultimately his correspondence with Mary Catherine leads him on a desperate mission to rescue her and get her to a US hospital. Meanwhile, Sami and Tyler struggle with issues of their own and the very core of their relationship is in jeopardy. The team of angels walking is busier than ever in this epic battle between life and death." -- Back cover