Emily and the Intergalactic Lemonade Stand [Book]

Alien Invasions! Robots in the Streets! The world's only hope is... Earth is under attack! Aliens invade! Robots fight in the streets, battling over the most desirable piece of real estate just discovered in the suburban outskirts of the Cosmos. Emily is 11 years old.

She has a giant robot, a lemonade stand, and would kill for a pony. Can Emily be Earth's savior?