My sister?

Are you jealous, my sister?

Jealous of me?

Maybe it's the way I talk

After years of speech therapy

Are you angry, my sister?

Angry at me?

Because of my accomplishments

or that you were stung by a bee

Are you sad, my sister?

Sad because of me?

I'm so sorry, I try

To stay out of your way, you see

Are you happy, my sister?

Happy without me?

I thought your favourite gift

would be my absence, your emotional fee

I am sorry, my sister

Apologies from me

for all the times I hurt you

or bored you enough you left me in a tree

I love you, my sister

I love you, says me

You're my favourite friend

My oldest friend, not he.

(Note: this is pure artistic licence, as my sister is actually a really kind person.)