> Can someone give me the basics of minor income and if this is a big undertaking or not?

Earned income works the same for minors as anyone else. If she makes over $433, she'll have to file a tax return and report it as self-employment income. Below that amount, no need to do anything. Under no circumstances do the parents report their child's earned income.

Unearned income like interest and dividends has some more complex rules, and in some cases the parents are allowed to report it on their own return rather than the child filing.