Update:
Spurred on partly by an OOC promotion in I-RED, but also by my previous difficulties in playing Katrina, she has become much more militant and combative. She's got a shorter fuse, quicker to snap and sneer. She's unapologetic about her loyalties and opinions, and she's more than willing to shoot you out of the sky.
She still is a sweetheart if you already know her, or if you put forth the effort to be an intelligent and productive member of society. She has that huge soft side at home which can be seen by any characters visiting their house still, thanks to Simca.
I'd say that Mitara Newelle is a small inspiration for how I'm going to begin separating and compartmentalizing my need for happy RP and the strength to thrive in EVE's dystopian RP scene. As someone put it, Mitty is a kitten with Aldrith only but a lioness everywhere else. I hope to emulate that with Katrina by shutting off most of the public examples of Kat's soft side, reserving it for private RP as suggested.
In an effort to distance myself from Kat to ease the IC/OOC burden, I mentioned she's unapologetic. She is growing strongly Caldari in nature again, and is passionate about her support for the Liberal agenda as I see it. This is to note that she doesn't see the Caldari as friends with the Federation or Republic or Empire. Business is business, and she believes that the path to a stronger State is through relatively cooperative free trade with foreign powers.
The darker truth behind her smiles and handshakes is that she does in fact think:
* The Amarr Empire is a dangerous ally and one that should be kept at arm's length.
* The Minmatar Republic is a pathetic social mess barely worthy of respect.
* The Gallente Federation is an increasingly insufferable mass of pompous buffoons.
* The Caldari State under the control of Heth represents a grave threat to both Ishukone and her..
TL;DR, she doesn't really like anybody but Ishukone and Hyasyoda. Anyone not of those two megacorps is someone she will always view with a measure of suspicion and caution. I'm going to start writing in some light dashes of ethnocentric bias and make it more difficult for her to get along with non Caldari.
It's also worth noting that she never says "Saisieni, Summit" anymore. She no longer considers outsiders her kin worthy of her native tongue. Unless the person is Caldari, she will not consider them kin without the person first demonstrating they deserve that respect by both supporting and -fighting for- the State and Ishukone.