i guess that's pretty normal. i have a younger sister. we used
to treat each other really bad. we even threw cold drinks and food
at each other when we fought. when she grows up and becomes more
mature, she'll talk to you more. like how i can talk about my
boyfriend to my sister.
give her some time lah. she's in the rebellious phase now. being
the elder sister, don't always pick on her. treat her better lah..
when she feels that you're someone she can talk to, she'll talk to
you about things instead of talking to her friends about it. and
then she'll turn better.
what's the age gap of you and your sister?