Ter2 dependent online application query

Hi guys
while i was filling online application form for my wfe dependet visa i found few doubts regarding to sec-6.
1. after main applicant employment details , got question like this
are you employed ? 1.employed. 2.unemployed.3.selfemployed
i choose unemployed as she (my wife)is studying
after that
questions like this
1.how much of your income is used to support your family members.
2.how much do u spend on living costs.

if she is a student how come she fill all these questions?
or im i wrong these r about me?
please clarify me need to apply in this week