Netwalker Uprising

IN A TECH-DRIVEN FUTURE, HARD CHOICES FORCE UNEXPECTED FAMILY ALLIANCES
Sometimes happy endings don't stay that way.
Over a year after Melanie Fielding helped her mother Diana Landreth overthrow a repressive North American government headed by her grandmother Sarah Stephens, she faces even more problems.
The new Netwalk technology that allows Sarah's personality to exist after death is developing in unpredictable ways. Rogue Netwalkers emerge, allied with Diana and Melanie's long-term foe, the Freedom Army.
Worse, Melanie is forced into an alliance with her estranged brother Andrew Stephens, at the demand of the international Corporate Courts. The Courts control a mysterious entity, the Gizmo, which is somehow connected to Netwalk. As they learn more about the Courts and the Gizmo, Melanie and Andrew realize that Diana may not be trustworthy.
That the Gizmo and the Courts have a dangerous agenda that isn't what it seems-and Sarah may be their best tool to stop the Gizmo from fulfilling its goals.