Modified by Aliens

In this dark supernatural horror story, aliens enhance the mental powers of a drug counselor, so that she can find teens who are disappearing in New York City. Myrna's hunt leads into a dark place where she must fight for her life and the lives of others.
Myrna doesn't know if strange psychic experiences are real or all in her mind. Strange visions point her to the kidnapper and the disturbing truth about what's really happening. Time flows in a different way now too, and it's hard for her to convince people that she's not crazy.

Modified by Aliens is book 5 in the They Are Here series:

Interstellar visitors arrive on and around Earth and take over. Their true nature is a mystery to humans. If you ever wonder what the many extraterrestrial objects that travel through our solar system might be, this unusual science fiction comedy has answers.