Could be a dislocation or a break. To be honest without knowing what you are looking at splinting could cause more of an issue. What is her age? How long has she been like this? Has it been developing or seem to be a sudden trauma?
Can you feel it? Is it swollen or hot? Is there bone protruding? Is it just hanging. Are you able to post a pic or video?
Aspirin is the right med for avian pain relief.. but pain is there to slow us down so we don't injure ourselves worse. For that reason I would quarantine to stop her from exerting stress onto the leg at least while getting an assessment. Are you able to see a veterinarian for help assessing the condition?
@Eggcessive knows aspirin doses and is also familiar with some leg deformities.