Hard of hearing

A review of a different model, the PW 300, from the same series:

https://www.soundstagesimplifi.com/index.php/equipment-reviews/32-paradigm-pw300-wi-fi-loudspeakers

I assume you have considered bluetooth headphones? This would allow her to adjust volume just for her. My partner uses headphones in our bedroom as she stays awake all night.

Thanks for the ideas as i know nothing about this subject. It’s now time to do some research. 

Most BT systems have audio lag. You are much better off wired.

Or much trial and error ahead for you. Stick with Amazon Prime.

I use a Sony SBS-XB13 for TV and music. It's small and I can put it right next to my ear or close to my good side. It can be plugged in or run all day on battery power. Only problem would be the sound delay, the Sony is fine but others are too delayed to watch TV with.