Fighting monsters was something, but fighting humans were different… With that in mind, Edward wanted to make sure that Kate wouldn't participate in any wars. She had some firepower and knew magic, so it wasn't a problem if she could face the enemies or not. Billy could understand that, even in that world, if he could avoid it, he would try his best to prevent his siblings from getting his hands dirty with human blood. Even more so if one day he has kids.
"Well, we can avoid that," Billy said. "Talk with those that you think that want to help and then made them leave the town at night while only a few people will be aware of it. That way, Kate will never hear of this. Naturally, I will go as well and since I am being distant lately they won't notice for quite a while."
"That is a bit… hiding things from my daughter isn't something I would like to do," Edward said while showing a troubled expression.