In UC 0136 she traveled to the Earth Sphere to warn government about her brothers' plan to attack the Earth from the Jupiter Sphere using a massive colony laser. When she reached the Earth Sphere her ship was attacked by Jupiter Empire military forces. The ship and its crew were lost but Europa escaped aboard a Diona. About to be captured she was saved by Tobia Arronax in the XM-X1 Crossbone Gundam X-1 Kai Kai "Skull Heart". She was brought aboard the Little Grey and upon learning that Tobia was with the Crossbone Vanguard tried to kill him in revenge under the belief that the Crossbone Vanguard killed Tetenith. Learning that Tetenith was still alive and living happily as one of the crew under the name Bernadette Briett, she lost her anger with the Crossbone Vanguard and sought their help in stopping her brother's plans.