Why won't my sister act mature with me?
She's already smart to the point she skipped 2 grades. She's currently in 9th grade.
She has ability to carry conversations with older adults and can be sophisticated. Why won't she talk and act like that with me? I asked her an elaborated question (I knew she had the answer to) but she replied with an ''I don't know, I'm gonna go the movies with my friends''.
She reverts back to acting like a kid with me.
Yet, she shows her capacities with others but not with me.