Well, that answers her question nicely enough. Usually her approach would be something along the lines of trying to convince him of the sanctity of life, but she has a distinct feeling that wouldn't really work very well in this case, so she will try an approach she can only think of as "Obi-Wan like". How to best make her point of view seem reasonable seen from the perspective of a murderous droid (or whatever he is)?

"This is an extremely inefficient use of your resources. You are wounded and incarcerated. There is absolutely nothing efficient about committing murder on this vessel."