Kiljoy's Links
When not in the midst of running for their lives, Kiljoy finds Rosie fun to be around.
Kiljoy's personality leads her to be very secretive and frustrated towards Rosie at first. (She physically can't believe Rosie wants to/can help her.) But once Kiljoy realizes Rosie will be in similar danger as her when spotted around Kiljoy, she does what she can to protect Rosie. That is, until Rosie proves herself to be a more useful asset who can actually help Kiljoy fight against the people who are after her.
After the two get stuck train hopping to escape from Kiljoy's "frenemies", they find out they're not so different from each other. Rosie's very friendly towards Kiljoy, eventually treating her like a good friend.