Some confusing lame questions (spoiler alert!)
1. How Ultimecia has Griever? She turned that steel lion symbol in a GF?
2. After Dollet mission, at the ball, where exactly is that place? its inside Garden?
3. Raine's last name is Leonhart?
4. Trabia Garden wasn't a Shelter, was it?
those quest. are lame indeed, jus in case... ah forget it:p
Re: Some confusing lame questions (spoiler alert!)
Answer 1: Uh-oh, this would mean going into the R=U theory, I don't want to start that again. But, I'll answer to second part of the kwehstion...Doomtrain becomes a GF from a ring, why not Griever?
Answer 2: Yes, in the ending, you'll find that the hall in kwehstion leads to a balcony that protrudes from the side of Balamb Garden. Therefore, you can say that the hall is indeed inside Garden.
Answer 3: The game provides no answer to this kwehstion. Raine's last name could possibly be Leonhart. IF she is indeed Squall's mother. There's a theory on that as well. You could say her surname is Leonhart, although I like to think that Cid and Edea named Squall when he arrived at the orphanage.
Answer 4: No, seeing how Trabia doesn't seem to have an emergency "escape from missile attack" system, we can conclude that it was never a shelter.