Intellectual Property Law
Intellectual Property Law Questions? Ask a Lawyer
Hello, assuming that the original pattern is under copyright protection then copying it exactly or substantially similarity for commercial purposes would be copyright infringement...BUT if she is only selling one copy then that is "de minimus" / personal use and would not give rise to a copyright lawsuit due to the lack of damages and it being very unlikely that the copyright owner would find out or care to pursue any action. If she is making/selling more copies then the risk goes up, especially when being advertised online.
let me know if you need clarification. there are many situations in copyright law that would be infringing strictly speaking based on the law but practically speaking would not be considered an actionable infringement (in part because there would be no damages to recover because the scale is so small, and certainly not enough to warrant a lawsuit)