Wow, I should have seen this coming because things have been way too quiet. It does seem strange for her not to have her own private security, since that's business and not personal as she clearly fears.
No one American is there.The Organization probably finally has proof that Kat has Otto's money and then some and they need to eliminate Kat to get the documents in order to access the various accounts.
The hit team seems to be a mix of Polish and American ex-soldiers and are trying to provide a red herring that this is a revenge hit for political reasons and not a criminal plot.
And this is not James Bond. Kat is very aware that she is faced with odds that are absolutely impossible. That doesn't mean that she is intending to go quietly.One against thirty and the one winning….
James Bond.
True…All Kat needs to is push a couple of buttons, one fills the lower house with CS Gas and the other sets of sirens in the same area at 120Dcb plus. For the attackers game over!
A complete non lethal defence.