Eileen was the youngest of her siblings who were born to Anna Treacle.
A year after the founding of the town when the crops came in, the town held the first annual Wheat Harvest Picnic near Tappy East Creek. During the picnic, Eileen wandered off towards the water and drowned. Eleven eye-witnesses claimed to have seen a ghostly white hand reach up out of the water and pull her in.
The creek was searched, but Eileen's body was never recovered. Several days later, the creek mysteriously became clogged with oily bundles of sticks,which was found out to have contaminated it, rendering the water useless for thirteen days.
In 1999, the spirit of Eileen supposedly manifested barefoot at the Black Rock Hills State Park which intersected with Tappy East Creek, manipulating several individuals in a school camping trip to try to kill each other. Over three people died in the process, two teachers and a student.