The Big Finish by Brooke Fossey. "Duffy is eighty eight, and his primary aim in life is to stay in the assisted living facility where he shares a room with his best friend Carl, and stay OUT of the nursing home down the street. This requires minding his p's and q's. Then Carl's granddaughter climbs through their window one night. Josie is drunk, and she has a black eye. Duffy's desire to help Josie runs crosswise of his need to stay out of trouble - not an easy balance to strike! It's not all hijinks (in fact, some of it's quite serious), but it does have humor, and it definitely has heart."