Tink was getting used to Anders not being there. That was a little sad, and a little scary. On the one hand, she was simply waiting for him to come home. On the other, she was scared that he never would.
Hence the drinking. And the Mythbusters.
She paused the movie she'd been watching at the sound of the bell, and came over to the door to answer it.
"Hey." She looked... tired. A little tipsy. Definitely not the bright and bubbly Tink that he knew from a few weeks ago. "Come on in."