I would
highly recommend designing a format for everything that she can agree on, and then create a template with editable regions from that. It would probably also be a good idea to make a page explaining the basics of coding so she can do it on her own. I did
a site for a professor who knew nothing about HTML, and now she can edit the basics on her own from what I provided her!
Maybe you can also give her the link to this site so if she gets really messed up, someone here will surely know how to fix it!

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