The planet Lusitania is home to three sentient species: the Pequeninos; a large colony of humans; and the Hive Queen, brought there by Ender. But once against the human race has grown fearful; the Starways Congress has gathered a fleet to destroy Lusitania.

Jane, the evolved computer intelligence, can save the three sentient races of Lusitania. She has learned how to move ships outside the universe, and then instantly back to a different world, abolishing the light-speed limit. But it takes all the processing power available to her, and the Starways Congress is shutting down the Net, world by world.

Soon Jane will not be able to move the ships. Ender's children must save her if they are to save themselves.

Children of the Mindis the fourth book in Orson Scott Card's Ender Quintet.

THE ENDER UNIVERSE

Ender series
Ender's Game / Ender in Exile/Speaker for the Dead/Xenocide/Children of the Mind

Ender's Shadow series
Ender's Shadow/Shadow of the Hegemon/Shadow Puppets/Shadow of the Giant/Shadows in Flight

Children of the Fleet

The First Formic War (with Aaron Johnston)
Earth Unaware/Earth Afire/Earth Awakens

The Second Formic War (with Aaron Johnston)
The Swarm/The Hive

Ender novellas
A War of Gifts/First Meetings