Daphanie Dawson Mystery #1: The Donation Box of Destiny

Hello, Watson. (Yes, you. Don't argue. If you're holding this book, you're officially my Watson now. Congratulations, no take-backs.)
So here's the deal: once upon a dusty donation box, I found a romance novel. Except it wasn't just a romance novel. It was a secret diary in disguise. Two sets of handwriting. Two souls whispering in the margins. Two people scribbling love notes where nobody was supposed to look. Except I looked. Obviously.
Cue me, Daphanie Dawson, self-appointed Margin Detective, armed with caffeine, questionable detective skills, and a raccoon-level obsession with dusty boxes. What I found was a trail of breadcrumbs, ink-stained, swoooopy, tinnnnnnnnny little breadcrumbs, that led me to the kind of love story you don't just read about, you feel in your caffeinated spider bones.
And no, this isn't one of those gloomy murder things. Nobody gets stabbed (except maybe my dignity). What you do get: romance, mystery, swooning, scribbles, theories, tangents (so many tangents), and one very professional, not-at-all chaotic detective narration. By me. About me. Starring me.
Oh, and Jonas Branne? He helped. A little. Mostly with commas.
So buckle up, Watson. This is the Absolutely, Positively, No-Doubt-About-It First-Ever (and Totally Serious) Daphanie Dawson Mystery. And you're coming with me.