Maybe if our bodyguard wasn't in an entirely different realm then that course of action would not have been required
Only on a certain path. On others she is told to by Linnae and Linnae covers her ass with the council to avoid her getting into trouble.
This is why (not having a go at you) in a heavy story based game, you should play all paths so you know when you are stating facts, or just saying something from one path perspective. On the non-love path, no, Kaija very much does not disobey orders at all, she is told to intercept by Linnae, she does not do it of her own volition.