Isabella is 19 years old and a full-time student at Holmes Institute studying the Bachelor of Fashion and Business. She is saving for an overseas holiday to Poland and works part-time at a major department store in Melbourne. Two months before her planned trip to Poland she finds that she still needs $5,000. Her father employs her for four weeks as an office assistant in Harrolds Melbourne, a busy fashion department store. He pays Isabella $5,000 for this work. The other office assistant receives $500 a week.

With reference to relevant cases and legislation, advise as to the assessability of the $5,000 in the hands of Isabella and the deductibility of the amount for her father.