Two Thieves an ErrorInk story

Favor?

I was standing face to face with Error. Why has he not said anything, alerting the group?
Just then he gestured for one of them to come over here. I panicked. I'm dead. Instead of killing me, One of them, I'm assuming the boss threw me onto the ground.
  "State your name and purpose girl." The boss said.
  I stayed silent. I don't have to tell them shit. He got annoyed and tried to kick me. But I stood and punched him so hard he hit the wall.
  The others gasped. One that had a big knife rushed to the boss.
  "Nightmare are you ok?" He asked.
  I saw he had a Chara attached to his soul. I looked at Error. He was smiling.
  "Maybe... you are more useful than you look." The black teared one said.
   They told me their names and explained a plan to kill the queen. It was a horrible plan. They can't just wing it. They'll be killed. The idiots.
  I sighed and took the bandana down from my mouth.
  "It's a shit plan. You'll all die within seconds. I can help but... not for free." I said.
  A yellow blush crept across Error's cheeks at the sound of my voice.
  "W...what is your price?" He stuttered.
  I thought for a long moment.
  "A simple favor would suffice."
  Error smirked.
  "Oh~"
  "Not that kind of favor dip shit." I spat.
  He looked disappointed. I tried to hold back a smile and looked to the ground.
  "I don't need one right now, but I need to know I can count on you all." I said.
  Thankfully they all agreed. I heard Dream and Blue running back into the forest.
  "Oh dear, they're being followed- hang on I'll be back." I said.
  I jumped up on the rooftops and pounced on a guard, slotting his throat with my knife. Dream and Blue stopped the other one as I stabbed him.
  "Ugh, they got blood on my knife." I said.
  I wiped the blood off of the blade and put it back on my armband.
  I went back to the other group and mine followed me.
  Nightmare looked furious and when he saw Dream. Dream gasped and pulled me back, protecting me.
  I am confused. I gently pushed him aside and walked to the others.
  "As I was about to say, you need a map of the castle. And then we can come up with a plan." I said.
  "A plan for what?" Blue asked.
  "They-"
  Nightmare covered my mouth.
  "That information is none of your concern brother." He said.
  Dream pulled me back to him.
  "Don't you dare touch her!" Blue shouted, summoning a bone.
Ok, this is getting ridiculous. I summoned a shield around myself and broke it, pushing everyone away from me.
"If you two could stop acting like children for five minutes we can get a much better understanding of the situation." I said harshly.
Dust and Horror laughed and laughed.
"What's so funny?" Dream spat.
"She thinks she has control over us." Killer answered.
  I glared at him and he fell silent. Then laughed again. This time mockingly. I picked him up with my magic and stared into his eyes. I knew exactly what he was seeing. He was seeing his worst fear. Blue falls it the fear stare.
  Nice t a creative name but I suppose it'd have to do. I put him down and he was shaking and whimpering.
  Nightmare smirked.
  "Perhaps she could be useful."