Ask HN: What's the best cms for a grandma?

So I promised I'd make a website for my mother. I did that and created a very basic wordpress site for her to blog on and talk about her interests. The problem is she doesn't like wordpress and really it's way more advanced than she needs and I think that's where the problem lies. It doesn't help that I'm not super versed in PHP.

Now if I were to make a website for myself I'd probably use a static website generator or django. But I can't possibly expect that she'd be able to use these without my constant help. While she's reasonably tech savy for her age, she's still in her 60's. And I can't set her up with something like squarspace since she can just barely afford a shared server on her retirement income.

So now I'm looking for something that I can set her up with that can meet some basic requirements. Let me install it quickly and get a theme going in twig or some other theming language and provide a basic portal for her to log in and make blog posts/add pages and nothing else. I've been searching but I'm having trouble finding something that simple with documentation to back it up. So I thought I'd ask here.

What CMS would you recommend to a grandma?