Look into Facebook Live- I know someone who is a working musician and he did a show from his living room last Friday. In his case, it's paid admission but if your client charges for each session, it would work the same way- he had his Venmo and PayPal account info in the background.

Lots of education is done over Skype, too- some feeds are a bit more prone to buffering, but this one should work for her if she needs it to be interactive.