I'm Dalish, yes. Most clans aren't very trusting of outsiders, but I'm sorry you felt like a trespasser. If I were the keeper.. Well, I suppose that doesn't really matter anymore.
Alim is a good man. Us elves? There are some. I haven't met any other Dalish, though. Some people don't know much about mages, but it's certainly safe to talk about it here on the boards. There aren't any templars, just people who will look at you funny.