apologies in advance if this gets long-winded and rambly! kier was a medic with the adf when the war started but about a year into the war, he witnessed them conduct an attack where innocent women and children were killed and it soured him on them. he then deserted and while he was, was caught in a blast that busted his ear drums rendering him deaf. carrying on, he stumbled into enemy territory where the high ranking glf soldier would have essentially saved his life and prevented him from being shot on sight. for whatever reason, she decided to trust him and potentially even put her position at risk by doing so. she took him under her wing for the duration of the war and even went as far as aiding him in obtaining a cybernetic implant that restored his hearing. they went their separate ways after the war - kier remained on nibiru for a couple of years before moving on and she could have gone wherever/done whatever you like. i was thinking she's new on the station though, the why and what for, up to you. as i said before, she would ideally still have glf ties and support the cause just for the added drama because kier kind of landed in neutral territory after the war being more anti-alliance than pro-glf.