remote speaker for TV in nursing home

[AUinHsv 584]

This makes it complicated. Mom has a speaker bar but wants another speaker near the chair. I can't do a receiver because of space. It's regular cable so no Apple TV stuff etc. It cannot have a separate control. She has one remote and likes it. I can run wire in place of the sound bar if I have to. Ideas?

[Bevo&Pevo 5519]

Would she try BT headphones?  My dad has a gadget that works his phone and the TV.  I can mute the TV volume and he can still hear it.  Lesson here is don't talk about him anywhere within eyesight.