What your friend is probably saying is that she reported the money she paid to you as an EXPENSE for her business. She may or may not have been required to issue you a 1099-MISC. Unless you were paid $600 or more, she's not required to issue you a tax document.
I'm assuming that she didn't withhold any taxes from your payment. She'd have been required to issue you a W-2 if she had.
That said, ALL income must be reported. And this income will likely be classified as self-employment income to you. See the information below regarding self-employment.
"Am I considered self employed?"
https://ttlc.intuit.com/replies/4771022
See the instructions below for reporting this income even though you didn't receive a tax document for it.
https://ttlc.intuit.com/replies/4772601
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***
