Welcome! Just to note, I'm a terrible failure with alt + numbers = Fancy letters so is it all right if I just type your name as Aeolyn?
As for a nick name we could call you Lyn? It sounds prettier than Aeo. LOL
I have 4 characters (yes I know >.<). Lillie is my newest and it's likely they've never crossed paths before. But they'll meet in the future no doubt. She gets along with everyone so that's easy enough.
imenry and hissra probably never met her either since they spent the bulk of their lives not in Ferelden. However, depending upon which Dalish clan she trained with she may have run into Chris Walken... aka valan_arandil. This could be both awesome and terrifying. After all, Chris Walken. :P