Who am I?

This poem was written for me by my sister who I've put her through a lot over the past few weeks! I love her dearly!

she's an artist of sorts
with her brushes and paints
but she doesn't use a canvas
it's opinion she taints
around certain friends
she paints on a grin
so she can look normal
so she can fit in
with other friends
she's loud and obscene
it's the aim of the game
to be rowdy and mean
close to her family
she's quiet and shy
they hardly take notice
if she is nearby
when she's with the guys
she's a tease and a flirt
she gives and she gives
ignoring the hurt
the people nearby her
they hope and they pray
that they can be normal
like she seems one day
but when she's alone
she breaks down and cries
for there is no answer
when she asks, "Who am I?"