The only Carol I know about is the one from the original series, not from Fear the Walking Dead.
I think I know the original episode you mean.
A crazy young girl kills her sister, then Carol, who had become their guardian, kills the older sister.
That was not Charlie.
I stopped watching the original series years ago. Is Eugene still a character on that show?
I also lost interest in Fear after Nick and his mother Madison, got killed.
I liked a lot of the characters on Fear, but the story line just got to be too repetitive, so I stopped watching that, too.
OK. My feeble memory thought that that was “Charlie”. I also quit watching TWD about the time Carl checked out.
Eugene has kind of become a major character in the original series.
We never saw Madison actually die (even though it seemed inevitable). And there are rumors that she may return to the series.