There was at least one big holoclipper that deleted all clips older than a year recently, and it got rid of a bunch of classic clips that are hard to find. Guy still makes new holo clips too, no idea why he deleted the older ones. Others might have done the same or just got their channels hit with bullshit for w/e reason.
I vaguely remember the clip you are talking about, she was solo playing minecraft and was underground while yammering on about that stuff, that doesn't really narrow things down much in that early era, but still.