natalie dimitrovska set dana vulin on fire at her home in february 2012 .
ms vulin suffered third degree burns to more than 60 per cent of her body .
dimitrovska was sentenced to 17 years in jail for her drug affected crime .
lawyers argue her sentence was ` excessive ' for the harm caused .
her appeal will be heard in the supreme court of wa on tuesday .
meanwhile , ms vulin has countless more reconstruction operations to go .
her scarring is so bad she ca n't straighten her elbows or lift her arms up .