I have replied on many Keyboard / Piano queries, so if you search on my name and relevant 'key words' you should find a few things.
As a TA, I taught 'informal' music for twenty years - Keyboard, recorder, percussion.
Do you have an acoustic piano, or digital?
The ABRSM do a lot of music for all Grades, as well as Theory books, and 'Theory in Practice' for each grade, where you write answers to various questions.
Is DD having lessons? At school, or private, and what Grade is she on to?
I think you have to try and overcome your 'fears' and believe that music is not outside of the reach of a literate, numerate adult, with a certain amount of effort, regular practice, and listening critically to ALL music, not only stuff you like, but harder things.
If you could really play the sort of music you WANT, what would it be? (Imagine magic lets it happen, and don't hold back!)
I'll look back in a few days, with links and more specific suggestions.