Buffy kept a firm hold on her sister's arm, watching her with concern until she looked stabilized again. She knew it took a lot out of Dawn, both physically and mentally, but she still couldn't help but worry, even if she'd been told to expect it.
"We have to," Buffy said to Spike, pulling her dagger from it's resting spot against her hip. Even if she didn't say it, she definitely agreed with Spike's thoughts. She didn't know he was thinking that way, as well, but she probably would've suspected it, anyway. He'd told her that much already. "Who knows what's in this place?"