You can try chatgpt or other AI tools but the problem is that they don't create real patterns. They look good at first glance but it's not actually a physically realizable pattern when you look at the details.
The way it works is pretty simple, you use text (& optional images) to create and edit patterns. There's also a built in editor to manually change any of the stitches. It's not perfect but with a few manual edits, she's been able to create some awesome patterns.
Here are a few one the ones she's made: https://stitchwink.com/share/8efdff80-2a21-4e7f-8122-553ca94... https://stitchwink.com/share/ab47a0bf-afbc-44ff-90ad-9128535... https://stitchwink.com/share/201fa791-39a1-4684-9f3e-2539a62... https://stitchwink.com/share/dcdf06be-fe2b-4353-85e5-3eede41...