Geneviève Bujold ran screaming from the set after three days.
Through a wall loony tunes style does not seem inconceivable.
And she was probably paid considerably more than Jennifer, given that she was the series lead.
Have you ever seen the footage of Eric Stoltz as Marty McFly?
I never really added it up before but that makes Kate the most junior cast member. the voyager cast was together bonding learning to be one of those stage families, and then out of no where in walks this punk kid "Mulgrew' thinking that she's in charge pushing her weight around and taking the good parking spot.
With that being even a fraction of the truth, Kate could have been a lot nicer to jeri when she showed up.