What is the best software to draw anime / manga?

Hello
I have a girl who has asperger syndrome but draws super good anime and manga comics. Her birthday is coming and I would like her to be able to print her drawings or what she would draw on a 3D printer because she even makes comic strips with her own characters.
I think it would be a good gift.
I would like to be advised to look for a software that is not very complicated to use to draw on PC and then a program to pass it to the 3D printer.
I do not have much knowledge of the subject, but I would like to learn.
Thank you.

Dear,

You can try 3D builder app in Windows 10.
https://www.microsoft.com/en-us/p/3d-builder/9wzdncrfj3t6?activetab=pivot:overviewtab

or google sketchup.

If drawing is done, you can export it to STL file, that you can use in 3D printer software like Cura or Repetier.

Regards,
Velleman Support.