What does it mean when you wave at a little girl and she dont wave back she just stares at you but her brother waves
Her parents taught her not to wave at a stranger
She is thinking "Stranger Danger"
she dont like you or she dont know you!!
She's shy, or apprehensive, or both.
How young was she? she might be thinking stranger danger, or she might be to young for it to register that she should wave back.
She might be uncomfortable around you, and when she sees you approaching she doesn't want to acknowledge you.
She is shy or she don't wave to strangers. Maybe she doesn't like you.
Sounds like she's shy. Maybe start saying hi to her then talk to her a little more each time. In time she'll get comfortable around you.