In "Take Up Arms" Vilkas wants you to bring a shield to Aela. My quest pointer leads to Jorrvaskr, where she is not, and when you enter the building the quest pointer moves to an area outside Whiterun near some giants. When you leave Whiterun the pointer is back on Jorrvaskr, and so back and forth like that. She is not in either of these places, yes I'm certain. Also, I never encountered the Companions fighting a giant at the farm outside Whiterun as most of the guides say. I simply entered Whiterun and randomly went into Jorrvaskr to start the quest. Maybe that has something to do with it? Does anyone know where Aela might be hiding or a way to fix the glitch? I've played to level 35 since starting that quest in the beginning and haven't seen Aela anywhere. Only solution I've seen is using the command line on the PC version.