PACK FILTER.
Well you're not a succubus or a mutant, and we're not stupid. The second people know about us it ups the possibility that they will turn on us. Then they could start trying to hunt us.
Something shitty happens in camp who do you think the rest of them will turn on first? As far as they're concerned they have people on defense and seem to trust them.
Get on defense training if you want to make a difference and help. They don't have to know what we are for us to help.