For her use case, will a nVidia or AMD GPU matter?
If yes, would there be much performance difference between the GTX 1650 (SUPER) or GTX 1660 (SUPER)?
If no, nVidia GPU or AMD GPU?
GFX acceleration under Photoshop is slight (source: I'm a photographer) and is only used on a few select parts of PS. Unless she is doing the work professionally with huge RAW files and tons of layers, a simple nVidia 660GTX or better will do just fine.