Did the character 'Kara' add anything to this movie?

* Some Spoilers *

I'm trying to remember if Kara moves the plot forward at all. The only actionable information I can remember Brendan getting from her was the party invitation he found that got him an audience with Laura. Other than that all three of his meetings with her seemed like they could have been cut without much impact to the plot.

It was implied that she let Dode know where to find Emily's body and that she (Kara) was the reason he refused to tell Pin what he knew without receiving substantial payment. But I think the movie would have had a tighter plot if Dode’s motivations were his own.

The film already had a major femme fatale pulling the strings of all the male puppets around her. Did it really need Kara’s three scenes just to add a second man eater?