Kate Mulgrew is often a troll. She trolls the audience, makes up shit as it comes to her and laughs along with it. She's always ON and always a comedian. At some point she came up with a quirk about how she and Stewart were the only ones to spend 7 years on a ship as captains and she's enjoyed throwing it out there in mock pride, something she uses as the other side of the coin to self deprecation all the time
If you watch her talks you read this stuff in her voice
and the style is quite obvious.