The unnamed woman claims the incident has haunted her ever since and she now needs help to try to recover.
She has reported the incident to the Mutual UFO network (MUFON), the world’s biggest investigator of UFO sightings and alleged alien abductions.
In a report to MUFON, the woman, now 16, claims she was just four when it happened in 2004, in Standish, Michigan, USA.
She said in her report: “A bright light shined through the window. I leaned up to wake my dad up but he wouldn’t wakeup.
“I looked at the window and to my surprise there were four grey aliens standing there then I blacked out.
“I was four years old and did not know about aliens at the time.
“I have remembered this my entire life, it’s burned into my mind.
“I have tried to find a hypnotist in Michigan who would help me remember more but have failed in finding one can anybody help me?”
The woman claims the creatures which took her appeared like the classic so-called alien grey species, popular in sci-fi circles.
Now 16, she provided a CGI image of the aliens appearing at her window for investigators.
So-called alien greys are the most common type of being described by people who claim to have been abducted by aliens.
Sceptics claim there is no evidence for anyone ever being abducted by aliens, and that it is likely to be the result of dreams.
They also suggest that the theory has gained a cult-like status with many people latching on and embellishing stories.
The late sceptical UFO researcher Philip Klass, who died in 2005, famously said: “Despite the fact that we humans are great collectors of souvenirs, not one of these persons [claiming to have been aboard a flying saucer] has brought back so much as an extraterrestrial tool or artifact, which could, once and for all, resolve the UFO mystery.”