Sabriel is surprisingly comfortable around Yuuki considering that he is a Shiki but he's been a great help to her ever since she met him. She trusts him a fair deal and wouldn't hesitate to contact him if she felt there was something dangerous going on around the village.

And you know, she's open to the whole talking and meeting up if he's bored or ever gets bugged about something enough to want to vent about it. All in all, he's a pretty cool and calm guy and even though he's a little quiet she considers him a friend and would rush to help him if he needed it.