Disclaimer: I do not own Undertale, or any of its characters.
It was cold. Really cold. Charlie wished that she had worn warmer clothing. Not that it would matter for much longer. She wouldn't be alive to notice the cold. Or at least, that was her plan. She rubbed her arms as she continued walking up the mountain. It was getting dark. That wasn't good. She hated the dark. Still, she marched on determinedly. Nothing or nobody could stop her now. Not that anyone would try.
Charlie had been climbing for God knows how long. Her legs ached, it was now really dark, she felt scared and alone. For a fleeting second she thought about turning back, going back to the village where she lived and having someone help her to overcome her depression. But then she remembered that no one would help her. Her parents were dead and she wasn't friendly with anyone in her tiny village. Not after her best friend disappeared up Mount Ebbot.
When they vanished every last bit of happiness was sucked out of Charlie's body. Charlie didn't know what to do without her best friend by her side. She was sad, and she wouldn't talk to anyone for a solid week. She found herself in a downward spiral. She was always sad, always lonely, she found it hard to find the motivation to move from her bed most days. Whenever she was with people, she felt disconnected from them. She felt tiny, hopeless and alone. The place where she lived didn't feel like home any more, there was nothing left there that she cared about. So Charlie kept climbing up Mount Ebbot. She was exhausted, but she didn't really care. She just kept moving, kept climbing, never resting. Of course, seeing as she was only a seventeen-year-old girl, she eventually passed out from exhaustion. She woke the next day, got up, and continued hiking up the mountain.
After about an hour of climbing, Charlie came to the summit of the mountain, and before her was a hole in the ground. It was massive, and when she looked down into the hole it seemed endless. It was pitch black; you couldn't see the end of it. It was a perfect place to die. She would vanish completely from this world. Nobody would look for her body, nobody dared to come near Mount Ebbot. It would be like she had never existed. No one that had ever cared about her was alive. No one would have any significant memories of her. Maybe the people of the village would use her and her friend as a cautionary tale, warning the younger children not to go up Mount Ebbot. "Hey kids, don't be like the one who went for a hike up the big mountain and never came back! Don't be like their best friend who got all depressed and climbed the mountain to kill herself!"
Charlie leapt into the hole, and as she fell through the air, she finally felt at peace.
"I can't wait to see you again, my friend" she whispered as she closed her eyes and prepared for death.