Part of me, however, feels like these technologies risk becoming increasingly irrelevant. Between improvements in low-code/no-code platforms and LLMs that write code for you, I’m not sure how useful these skills will be to her down the road.
What do people think? What are the right tools and technologies nowadays to put in front of a tween interested in software development?
She will only be 11 once.
And then not for long.
It happens fast and then is gone forever.
Her interest in doing what you do is an expression of her entering the adult world.
She is framing up her adult relationship with you.
And you are framing up your adult relationship with her (regardless of how you fell about that).
You can of course prioritize "Part of me, however, feels"
Or perhaps prioritize time with her without thinking about productivity, efficiency, or anything else besides the moment.
Good luck.
And answering your question then yes, all javascript html and css are fundamental for web interface.
That said, relatively, the build is the easy part. Solutions are effectively finite. What to build on the other hand? That is where the magic - or the agony of defeat - happens.