[57]

Several options:

1. TV with headphone jack - there are probably still some out there.

2. Analogue outs from TV, but then you'd have to turn off the internal TV speakers - a pain.

3. Headphone jack on an AVR (a used inexpensive AVR could be used for headpones and/or speakers).

4. Analogue outs from STB to headphones (no auto mute, but one button mute on TV would be easy). Properly setting up the Rogers remote to control the TV volume instead of doing so via the STB would be a good idea in any case - global volume lock.

5. Digital (optical) out from TV to digital headphones - need to turn off internal speakers, a pain.

6. Digital (optical) out from STB to digital headphones with optical input - need to mute TV speakers - easy.

 

[57]

Most sets have a mute function, so if you were to use a small audio amp to power headphones from the analog output, she'd just have to hit the mute button

Some TVs require you to turn off the internal speakers to activate the analogue outs (There is usually an "internal or external" user menu option - I've had to do this for several optimizations when the client wished a connection to an AVR for example). I don't know if simply muting the TV speakers would power on the analogue outs...

For options 5 and 6, are there headphones that have an digital optical input?

Yes, headphone amps or wireless. Search the web for "headphone optical", or similar terms.