Transformers Prime: Fanfiction Story Of Shockwave & Soundwave's Sister

don't own the picture. but will work on a picture having both Soundwave and shockwave. but This story is about a femme who is named SteelWave. and she is the sister of Shockwave and Soundwave. but they both think their sister had perished during the war. but they don't know that she is alive. but SteelWave doesn't want to join the Decepticons but she wants to be with her brothers because she is alone. and now one knows that she exists. only her brothers do but they think she is offline. so will she join the Decepticons or will she remain a neutral.