V C Strack: 1 book

Harper Orion has been alone for two years. A virus had swept the Earth and left the planet desolate and devoid of all plant and animal life. She is the last one left. Until one day the phone rang, and the barren world she thought she knew was turned upside-down. When a group of strangers shows up at her door, Harper starts to feel normal again, and just might end up falling in love.