The bright side of going dark / Kelly Harms.

Enhanced descriptions from Syndetics:

From the bestselling author of The Overdue Life of Amy Byler comes a fresh, funny, and thoughtful story about going off the grid in order to truly live.

As one of the most popular influencers on social media, Mia Bell has lived her life online for years. With her celebrity dog and gorgeous fiancé, she is planning the ultimate virtual wedding--expensive, elaborate, and entirely paid for by sponsors. But off-camera, her world is far from picture perfect. After being jilted by her fiancé and faking her nuptials to please her sponsors, Mia finally has had enough. She heaves her phone off a cliff, ready to live--and maybe find love-- offline for a change.

Mia's sudden absence doesn't go unnoticed, especially by techie loner Paige Miller, who hacks Mia's account and begins impersonating the internet celebrity. Paige has her reasons. Her half sister, Jessica, idolizes Mia and desperately needs something to believe in. If taking over Mia's online persona is Paige's only means of connecting to her sister, so be it.

Creating a like-worthy life is more fun than Paige expected. But when she grows too bold and is caught in the act, a fiasco ensues that could forever change Mia, Paige, and the people who love them. Because somewhere amid the chaos is an invaluable lesson--one that only real life can teach.