Neither Here Nor There by Miriam Drori
Esty is 19 and unmarried, and that's practically an "old maid" in Jerusalem's Haredi (ultra-orthodox) community. However, the reason she hasn't agreed to marry anyone is that she knows the Haredi life is not for her. Once she's married, she might be trapped forever. Gathering up all her courage, she leaves her whole life and family behind. What she finds is a world that contradicts everything her community ever taught her, not the least of which is about falling in love.