I have the quest to bring followers to Delphine. I have a follower already, Aela the huntress my wife, but she wont be recruited. I try getting others but I have Aela so I cant. I dont know how to leave her. Please tell me how so I can move on with my quests.
Aela isn't a companion at this point she is considered a quest giver which means she will follow you until whatever mission involving her is completeted.
If you are on PC, all you have to do is open console by hitting this key "~" and then type "set playerfollowercount to 0". this will dismiss all your followers, some followers you did not even know were following you. This may or may not work but it is worth a try. After typing press enter and recruit the follower you want recruited.