

With modern tech, my best idea would be a bluetooth speaker with a remote control with physical buttons. If someone connects this to smartphone or tablet, she can start/stop, loud/quiet, forward/backward skip from the remote. This should work with any music or audiobook player, if she has occasional assistant to navigate the actual app.
But I have to agree with others. A radio is probably better. It’s an all-in-one device made for the purpose, no frills.

I have also an Epson EcoTank and rarely use it, but it works.