Ava Gilmore has a huge problem. She’s in love with Oliver, her sister’s fiancé. What’s worse? She’s their wedding planner. Now her sister has run off to Paris and left her and Oliver to plan the wedding together. Oliver is frustrated that his fiancé keeps pushing back the wedding. The more disinterested she gets with the details, the more he thinks she doesn’t want to marry him at all. And then there’s Ava. Since when did she become so adorable? The more he spends time with her, the more he starts to think he’s with the wrong Gilmore girl. Her Sister's Fiancé is a novella offered to subscribers of the author's newsletter.