GwenRaiden
AKA Apology Girl
She couldn't see her. She just knew there was a presence because Connor was acting strangely. He told her.
No. Other people could see the First if it wanted them to. Remember the one Slayer that was killed and the First became them? It interacted with the entire group, so everyone saw it.I thought other's couldn't see when it appeared to a certain person.
I don't think so . He had powers because of his parents . Slayers become the Slayers . Unlike Conner they not born with them.Gifted with strength and speed of demonic origin just like Buffy et al; is he not the first male "slayer" in the Buffyverse?