Yes. As long as she didn't elect to be taxed as a C- or S-Corp, a single-member PLLC can file a Schedule C as a disregarded entity (sole proprietor) and file with your individual tax return. The Schedule C will flow onto
your individual income tax return (Form 1040) and be netted with other personal
income and expenses.
You can use either TurboTax Self-Employed (online version) or TurboTax Home & Business (CD/Download version).
Online versions can be found
at this link TurboTax
Online Versions
TurboTax CD/Download versions
and pricing can be found here TurboTax
CD/Download Versions .