"I can shoot dark energy, and control it. Heck I even used it to destroy Twilight and the others." Sunset said with a gleem in her eye.
So Wallflower went to Sunset Shimmer to help her how to harness her power. She explained how she got ripped thanks to Bulk Biceps training. But it was time for her to learn about her magic. So Sunset explained everything about what Princess Twilight told her about the memory stone and how it got to Equestria. Then later Sunset decided to train Wallflower how to use her powers.
"So, there was a blast do energy when you attacked Bulk Biceps right?" Sunset asked.
"Yes. I know I was stronger then him but I hold off my strength a little so I don't hurt him. I didn't know the stone's energy can help support my super strength. I only question how?" Wallflower explained.
"Equestrian magic is very dangerous on Earth. When I put on Princess Twilight's crown back when I was evil, I transformed into a she demon and could control my dark powers."
"I can shoot dark energy, and control it. Heck I even used it to destroy Twilight and the others." Sunset said with a gleem in her eye.
"Uh hello?!" Wallflower said snapping her fingers.
"Oh right sorry." Sunset said, snapping back to reality. "I think the crown, despite being an element of harmony, must've known my desire and when I transformed, I knew how to control my powers." Sunset said.
"What about the friendship games when Twilight turned into Midnight Sparkle. You turned into an angel." Wallflower said.
"That's true. I did turned into a good version of my demon form. Daydream Shimmer. I had to stop Twilight before she destroys reality. When I transformed into Daydream Shimmer, even in that form I knew how to control my powers."
"I guess, when we desire something, we know how to control our powers. Twilight desired to understand Equestrian magic, Gloriosa Daisy desired to protect her camp by force. Juniper Montage desired to become famous, rather the world likes it or not, and make sure no one stops her."
"I did learn how to use the memory stone when I found it. And I desired to make to everyone forget you when you were good, and I lost control of myself because I went out of my mind and tried to erase your friends's highschool memories, and instead I erased your memories of being human." Wallflower said.
"But that's all in the past now. Twilight went through the same PTSD like you are now. Your obsessive desire is what made you control your power." Sunset said. "Tell me something Wallflower, what do you desire now?"
Wallflower thought long and hard, until she came up with an answer. "I don't desire anyhting. I just to do what's right. I want to do the right thing and take down bad people that desire to harm others. I want to protect innocent people."
"Then I'll teach you how to use your powers." Sunset said. "First, shoot at that broken shed over there." Wallflower focused her powers and shot the shed with her hand. The light blue energy blasted out of her hand and into the shed and it made a hole. "Good work." Sunset said. Now follow me."
Sunset took Wallflower to an a field. "Now I want you to use your powers on the ground."
"Why?" Wallflower asked.
"Trust me. Your gonna love it." Sunset said.
So Wallflower focused her energy and blasted the ground and out can swirls of rock combined with energy. "Holy cow!" She said in awe. "The memory stone must've inherited my body with rocks. With my energy combining with rocks and stones and can make then into massive attacks. Awesome!" Wallflower said.
"I know right." Sunset said.
So Sunset kept giving Wallflower a few tricks about her electric rock powers. Combining them with water, electric rock waves. And shooting mini rocks from her hands with the light blue energy, she even tried to use the power to help her fly. She can also use the energy rocks to give her a super jump.
"Good job Wallflower. You did good." Sunset said.
"Thanks. I can't believe I can control my powers of electricity and earth. It's amazing. I think I'm now ready to become a superhero." Wallflower said.
"That's cool. So your gonna wear a mask?" Sunset asked.
Wallflower shook her head. "Even better."
Later she went home and got to work on her costume. She went to a dumpster and found a black unitard and a light brown onesie, she ripped off the top part and sprayed a green stripe on the chest and upper arms. And sewed in two red patches with an "L" on them. She found some white shoes she sprayed green. Except for the bottom. She put on the costume and used her powers to make a rock like fabric to make rock gloves and a mask with glowing light blue eyes. With energy flowing through the rock parts. "Perfect."
Later...
A normal woman was enjoy her tea, until some guy with a knife stole her purse. She screamed for help as she runs to get it back.
"Not so fast senorita!" The theif said. "Come any closer then I cut you!"
"If wanna someone, you got to go through me first." A voice said.
"Who are you? Show yourself!" The theif said.
"If you insist." A shadowy dropped down from the roof. With her messy beautiful hair and her rock hands were in a fighting position. 
"Ha ha ha. What in the world are you supposed to be, some knock off of a rock giant from Frozen 2?" The theif sarcastically asked as he laughed. "Fine, I'll cut you up first, and then the tramp!" The theif charged at the rock girl and tried to stab her with his knife, but she put her arm out, and the knife hit the rock glove, but the rock girl wasn't bleeding, the rock glove felt real. "What are you supposed to be, some kind of rock version of Supergirl?"
"Ever heard of a minontaur?" The rock girl asked.
"What about about it?" The theif asked he as he tries to punch her.
The rock girl grabs the theif by the hand, and uses grips onto it with her super strength. "I... Am... The Labyrinth...!" She said as she unleashes an electric rock punch that knocked the theif out. "Here's your purse back." Labyrinth said.
"Thank you so much. So what was your name again?" The girl said as she got her phone out.
"You can call me, the Labyrinth, Hero of Memories. And I will protect this city with my life." Labyrinth said as she took the theif to the police and jumped away.
"The Labyrinth eh... I kinda like it." The girl said. "Maybe someday I'll see you again." She posted her reaction to a new hero in Canterlot City. "Hey everyone. It's me again, Vignette Valencia. And do I have a special to share with you."
To be continued...