Rivals since young
we fight to be the one to win
you just screwed up my life
manipulating the situation im in

Annonymously faking yourself
breaking me down, so now
I will destroy your life and your health

you know what Im like
when I get mad
you wish good upon yourself
now, in evil you will be clad

choose your coffin,
choose it well
your life after death
prepared by me, in hell

the title of Lucifers daughter
not given to me in vain
sibling rivalry will now cause
you to lose what keeps you sane

Laying you down,
in a coffin white
you can now pray
hoping to see the light

Debbie Steyn

http://www.poemhunter.com/poem/sisterly-hate/