Dark Energy

The Alien Affairs team once again heads across the multiverse in a desperate effort to placate disgruntled copies of themselves in a parallel universe where the relocated Nordic aliens are not living happily ever after. Half alien, Terrie Deshler, is summoned before Congress-again-where the Senate Special Committee on Aging threatens her if she doesn't divulge the secret of eternal youth. Terrie hatches a plan to put the government on the right path by resurrecting an American hero.
Meanwhile, she uncovers the mystery of the collapse of the Mayan civilization at the same time as she struggles to terraform Mars so she'll have a place to stash the surplus Nordics a millennium in the future. The discovery of a dark family secret threatens her burgeoning romance with the grandson of Elon Musk, and the family's computer avatar, Cassiopeia, is kidnapped by a geriatric member of Congress and his wife.
Carrie, Terrie, and her alien parent, Deshler, race to find her, but every time they cross the portal to the multiverse, someone launches a nuclear-armed missile at them.