Broken World by Kate L. Mary

When a deadly virus sweeps the country, Vivian sets out for California in hopes of seeing the daughter she gave up for adoption. Then her car breaks down and she’s faced with a choice: give up or accept a ride from brothers, Angus and Axl. She knows getting in the car with strangers is a risk, but with time running out, she’s willing to do whatever it takes to reach her daughter.

The virus is spreading, and by the time the group makes it to California, most of the population has already been wiped out. When the dead start coming back, Vivian and the others realize that no electricity or running water are the least of their concerns. Now Vivian must learn how to be a mom under the most frightening circumstances, cope with Angus’s aggressive mood swings, and sort out her growing attraction to his brooding younger brother, Axl.