Roshki loves to push people's buttons. Though she might say it's because pushing people is a] fun or b] something to do when bored, the truth is she does it to test how hard it is to drive someone away. Granted, not all people are subjected to the same amount of button-pushing, but the harder you resist the more and more she will continue to try and break you.
See, part of it stems from the fact that the people she most cared about left her. Roshki's parents, for instance: as a girl, she had a love-hate relationship with them because while they WERE her parents, usually they were too busy with work to pay her much attention. And when they finally brought her back home, the first thing they did was cart her off to some distance place. Aka, the Order. While there, her friends appeared never bothered to figure out what happened to her or try to contact her -- thus leading to another group of people seemingly abandoning her. In truth, though, most of them had been killed during a heist gone wrong that'd occurred right after her parents shipped her off.
In any case, from the moment she arrived at the Order, Roshki began to test people's patience and tried to keep herself from making friends, believing they'd either a] abandon her or b] get in the way of her return to Commenor. However, her Master, Kian Karr, refused to crack under her barrage and subsequently became the one person she truly trusted and respected.
However, when he disappeared (his writer went LOA), Roshki's world once again went upside down as she was abandoned for a third time. As of yet she refuses to acknowledge it, but deep down she isn't certain as to whether he returns or not. As a result, she's become more pricklier than ever, particularly to her current master [member="Barrien Siegfried"] and to any other Masters she might encounter, especially those on the Council.