A cool feature that Ellie has is it's logging ability. You can just create a channel that will be dedicated to logs, and as long as you've told Ellie what channel is the log channel - any mod actions done via Ellie will be logged there.
First create the log channel, you can name it whatever you want. As an example, we'll name ours naughty-list.
Now all you've got to do is run the command:
Ensure that you add a hashtag (#) before your channel name. It should become a light blue when you've typed it in that fashion.
Once you've done that a message will be sent to the set channel stating that this is where moderation history will be stored.