The Return of Night Mare

The crunching of grass echoed throughout the Everfree Forest. It was an unusually quiet night for Night Mare. Normally when she gathered herbs at night, there were at least crickets or snakes. But not tonight. And that only made the night more lonely.
She gently let down her basket of herbs as she approached a nearby pond. She laid down next to the pond. And looked at her reflection.
A normal enough looking unicorn. Jet black fur wasn't the most common color, but certainly nothing to write home about. Her mane looked nice enough too. But there was one thing about her that stuck out like a sore thumb. Her eyes.
Her eyes were a vibrant yellow. But more than the color, was the shape of the eye itself. Rather than the eyes of a normal pony, her eyes were reptilian. Night Mare normally didn't fuss over her appearance like this. But on such a lonely night, she wanted to look at somepony's face. Even if the only face available was her own.

Night Mare's eyes flashed. And slowly, she watched as her reflection grew a twisted and demented smile.

"My my. Are we feeling lonely again?" The reflection sounded sickening sweet.

Night Mare continued watching her reflection.

The reflection continued goading. "You know, not too long ago, we had a chance at the whole 'companion' deal. We almost did it."
"But we didn't." Night Mare replied. "I messed up the very first mission." She sadly averted her gaze.
"Well then why not just try it again?" The reflection cocked her head to try and meet Night Mare's gaze. "I'm sure there's another pony we could try it on."
Night Mare turned her head away again. "I don't want to." The words came out as a barely audible whisper.
"And why not?" The reflection asked, almost rhetorically. "It was certainly much closer to working than anything else you tried."
Night Mare was about to try and respond. But suddenly there was a loud rustle, and what sounded like arguing.
"My my." The reflection giggled. "There's a nice set of potential targets right there."
Night Mare left her spot by the pond to investigate. As she left, the reflection in the pond faded.