Holophrase

000358, aka Threefive, aka Holophrase, was one of the early results of human breeding by the alien invaders. 

She was first-generation bred, born in captivity in 1906, had no contact with humans from birth, but was liberated in 1919 at the age of 13. 

She was genetically engineered, a part of ongoing experiments to create a human that could telepathically communicate with the aliens. The result wasn't entirely successful - Holophrase has the ability to broadcast basic emotions to those around her, in a range that increases with the intensity she is feeling them. Unfortunately, she has no control over the power, and other humans who don't have experience often mistake the emotions she's broadcasting as their own.