Well, she certainly didn't intend to scare the child, but Furiosa just stands where she is, looking down at her mildly while she recovers from the startlement. She has no way of knowing what kind of situation the little fox girl has come from, but 'not a good one' seems like a safe guess.

When the kid answers her, pointing out the plush in the window, she smiles and sinks to one knee so she's not looming so much, craning her neck to look at the toy. "That's sweet," she says. "I don't know where mine is now. Probably long gone. A lot has happened to me since those days. But there are a lot of children where I live. I thought I might see something here they would like."