If this was reported to her on a 1099-NEC then she needs to enter it as self-employment income just like the photography business.
If this was reported on a 1099-MISC then you will report it in the 'Less Common Income' section. In your federal return scroll to the bottom of the wages and income section to 'Less Common Income'. Click on the last entry 'Miscellaneous Income' and then on the last entry again 'Other Reportable Income'. Enter a description here (Scholarship stipend or something) and the amount from box 3 of the 1099-MISC. It is taxable but not subject to self-employment tax.
@merritt1983
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