I'm trying to remember the name of a book that was part of a series. This was book 1. I remember that the heroine was called Caroline. She works at a country club (or similar). Her family used to have money but they lost everything. Her mom is big on keeping up appearances. A man from her past returns and now he's rich and has more power.
I think Caroline had a younger sibling, and she was an event planner but I can't be sure. I know the series has more books, all related to this club, and one of them is about one of the owners.