Girl Out of Water by Laura Silverman

Anise Sawyer plans to spend every minute of summer with her friends: surfing, chowing down on fish tacos drizzled with wasabi balsamic vinegar, and throwing bonfires that blaze until dawn. But when a serious car wreck leaves her aunt, a single mother of three, with two broken legs, it forces Anise to say goodbye for the first time to Santa Cruz, the waves, her friends, and even a kindling romance, and fly with her dad to Nebraska for the entire summer. Living in Nebraska isn’t easy. Anise spends her days caring for her three younger cousins in the childhood home of her runaway mom, a wild figure who’s been flickering in and out of her life since birth, appearing for weeks at a time and then disappearing again for months, or even years, without a word.

Complicating matters is Lincoln, a one-armed, charismatic skater who pushes Anise to trade her surfboard for a skateboard. As Anise draws closer to Lincoln and takes on the full burden and joy of her cousins, she loses touch with her friends back home – leading her to one terrifying question: will she turn out just like her mom and spend her life leaving behind the ones she loves