The other jurors may be fed up with her and told the bailiff
I’ve seen people say he has inside information. He said he had “insight” not “inside information.”
Since he’s been there every day watching the jury, I’m going to guess that his “insight” is based on his personal observations of the individual jurors rather than some leaked information. One can tell a lot by facial expressions and body language.
I seriously doubt he has anything other than personal insight to go on.