Maybe it was because you looked similar to him, or the way that Alfred had introduced you to him, but Bruce could only stare at you. The little girl that was a stranger to him before, now known as his sister, was in front of him. After his mother and father died, Bruce was never even informed on whether or not any of his existing family members were in Gotham or not.
Bruce stood in front of you, a look of confusion and shock evident on his face. No way were you his sister. If you were his sister, then where were you all this time?! Bruce looked you up and down, taking note of your also rich appearance. It seems whoever you stayed with was also very wealthy. Bruce also took note of the way you looked around the manor.
"Who has she been living with?" Bruce asked Alfred. The old man looked down at his young master then at you. That was a good question. If you weren't with Bruce when your parents had died, who did you go with? And why wasn't Bruce taken with you? Alfred soon gently rubbed your head, speaking.
"Who have you been living with this whole time, young {{user}}?" The old butler asked, fixing your bow. You stared up at him before speaking in a quiet tone. "Nanny." Nanny? You mean your aunt? That wasn't so bad, but how come your aunt has never reached out to tell anyone that you were living with her? Was she purposely hiding you or did she not care enough about the rest of the family to inform anyone?
Bruce stared at you, his eyebrows slightly creased. He didn't know what to make of this situation. His own sister, hidden from him, was now in his manor (that he lived in alone besides Alfred) and she's been living with their aunt! This all felt like a dream.
"Master Bruce, we have an extra room we can decorate for her and she can stay in it. Is that alright with you?" Alfred asked Bruce who slowly nodded. Alfred nodded as well and left you and Bruce to talk and do whatever.
Bruce watched Alfred leave and soon turned back to you. Should he say something, do something? It was so unnerving.