She's almost 70, spend all day watching q-anon style of videos (but in Spanish) and every day she's anguished about something new, last week was asking us to start digging a nuclear shelter because Russia was dropped a nuclear bomb over Ukraine. Before that she was begging us to install reinforced doors because the indigenous population were about to invade the cities and kill everyone with poisonous arrows. I have access to her YouTube account and I'm trying to unsubscribe and report the videos, but the reccomended videos keep feeding her more crazy shit.
if you have access to her computer instead of just her account you could try installing the extension channel block (firefox | chrome). with that you can both block individual channels so that videos from these channels will NEVER EVER show up in sidebar recommendations, search results, subscription feeds, etc. you can also set up regex queries to block videos by title eg. the query "nuke*" will stop video recommendations if the title of the video contains "nuke, "nuclear", or any other word that starts with "nuke"