So many suggestions here are so needlessly complicated. Just put some tape on the end of a thin stick 🤦

Maybe you could set her up a plex library or something like that?

The app I use (Voyager) has a “are you sure?” sort of feature where a window asking if I wanna delete the comment or cancel the cancel, as in undo the cancel and continue writing the comment, pops up. Maybe you could give it a try and see if it helps prevent this issue lol.

They’re pointing out a part of the video that caught their attention in some way, even if it’s just quotes, it’s still a form of feedback.

They need something for iOS though.