Making printing accessible to a child

Hi all. I am a novice with two printers (Anycubic Mega Pro and BambuLab A1) and a 7 year old child. She is really interested on 3d printing and she and I have looked through and printed models she liked from MakerWorld and Printables.

She has expressed interest in being able to create and print her own designs. I want to support that but my modeling skills (I use Onshape for some basic things) are pretty limited and I don't want my lack of skills and teaching ability to cause frustration for her.

I'd really love it if she and I could learn some things together and for her to be able to create a design and print it. If she enjoys that process she can grow from there.

Any recommendations for tools and a learning path that she and I can go through?