Cary and Gannon's story is probably my favorite Brewer tale. She takes care of plants, and she is interested in expanding her business. Gannon hires her and the story starts. However, he's had feelings for her for a long time in spite of their age gap but stayed away because she's his brother's best friend. We learn how she doesn't know how to deal with family members and throughout the story we see her learn how to cope. There's a little bit of angst due to those family relationships; the author handled it with care and gave us a fantastic ending. The love story was very well written. 
If you like grumpy but cinnamon roll vs sunshine stories, he falls first, little angst, no third act breakup, this book is for you.
EDIT: March 2025 - audiobook reread - Angelina Rocha and Jack Calihan bring emotion to an already favorite story. I just fell more in love with Gannon. It reinforced my idea that he is my favorite Brewster. Cary is just delightful voiced by Angelina.