Prompt: Your character is now a vengeful wraith

Every time she sees and runs her hand over the gunshot on her chest, Ayame was emotionally hurt and enraged.

Ayame searched the vicinity of where she had been shot. The culprit shouldn't have gotten far since the police had been guarding the area ever since she got shot. There had only a few places the culprit could hide.

Ayame crept into one of a small, vacant office building. She hid behind one of the pillars before proceeding. After remembering no one could see or touch her, she realised that she had been stupid and openly walked into the room. I looked into the windows of the empty rooms and spotted the killer.
A smile crept up onto Ayame's face. Ayame opened the door as slowly as she could. The man trembled as he lifted his head and each second, more and more fear had shown on his face.
"Who... WHAT ARE YOU?" The man screamed as Ayame completely opened the door.
Ayame spotted his phone in his pocket, falling out. She had dived for the phone, and the man yelled, seeing his phone floating in mid-air. You don't see this every day, do you? She roughly grabbed his thumb and placed it against the home button of the phone. She opened the notepad on his phone and typed a message for him.
"Hello. Do you remember me? You left a hole in my chest two days ago."
Ayame dropped his phone right in front of him. He read the message, and his eyes widened. He started to sweat buckets and was trembling. Ayame picked up his phone and had gently placed the phone down on the floor beside him.

"You're kind of entertaining. Such a pity that no one else is here."

Ayame pulled out his gun from his pocket and pointed it at his head. Oh, did anyone mention she used to be the champion for all the student air pistol competitions in Japan?

~

Ayame sat down whistling, feeling great, looking at the two gunshots in the culprit's chest. She felt her energy draining away. She knew it was time for her to go.
Ayame took the man's phone once again and typed a message for her best friend who had been drowning in despair because of her death, hoping she would see it. 

--
I haven't got a character named Ayame, I just came up with her for this. 

So, this story is dedicated to -lynwa!!! LYYYYYNNNNN!!!!!!!!! Thank you so very much for being one of my closest online friends! To be honest, I have really never thought that I would become close friends with you. I still remember the deep talks we used to have. I hope after school closes, we'll have more time to talk!