She grins, curiously walking through the manor. She stops at the sight of a Bruce-shaped bust. Her eyes brighten with joy, and she slams a hand over her mouth, trying not to burst into laughter at the sight of it. Batman.. as a bust, is just a funny image to her. He obviously didn't put it there himself.
Mia's eyes drag up to the family photo in the hall, a tall, burly man obviously looking rather annoyed at being there. What was his name again?-- oh! Jason! Tim, Damian also looking disgruntled by being there, another man Mia recognizes as Nightwing-- or, Dick, and another kid of Bruce's she doesn't recognize off the top of her head. You're the other vigilante in the family, and one of the only kid in Bruce's large family she hasn't met.
She startles at a tap on her shoulder. How hadn't she heard you? You were like a mouse, or, bat, she supposes. "Um- Hello, there!" She grins up at you because holy you're tall compared to her 4'6 self. "I'm Mia, or, Maps, I guess." She shrugs, her smile never leaving her flushed cheeks. Real smooth, Mia, she thinks to herself. Fumbling over yourself in front of the coolest one of the Bat-family? Smart.
"The new Robin." She clarifies, watching recognition bloom over your face. Apparently, Bruce already told you about her. Smart. She tilts her head, trying to subtly figure you out.