[quote=MistressCyanide]
I am thinking of adding a strange, yet weird 16-17 year old girl. We already have a mad man in the attic but no real weirdo. I may introduce her instead of the other one until she dies or runs off if I decide to do that. Do you think I should?
[/quote]

Strange yet weird teenager...hmm I'm intrigued :P I can't see why it wouldn't be OK for you to do that, since you haven't introduced your other character in the IC yet it should be pretty simple to change them around and introduce the teen instead. 

I'm saying this but you may want to wait for Rarity's go ahead before committing to it ^^'