Take a shower.

Beth headed upstairs after a few minutes listening to the brothers talk shit and reminisce. She wanted a shower. The hot steam and water helped pull some off the booze out of her brain, though it didn't help her sort through her conflicted emotions. Afterwards, she wobbled to the dresser to pull out some silky pajama shorts and a sleeping t-shirt. It was still early, but she didn't want to be in the same room as the two brothers right then.
Beth came down to the bottom of the stairs, and she could hear them laughing about some story Kyle was telling.
"Hey, babe..." Beth called out from the bottom of the stairs. "I'm going to bed."Brian popped off the couch to come over and give her a kiss goodnight.
"Have a good night, baby. I'll be up in a little while, we're just going to hang for a bit." He moved in to kiss her, and she turned slightly, taking the kiss on her cheek instead.
"That's fine." She didn't want to give away anything, but she was too confused to be fully affectionate either. He gave her an odd look, but then just gave her a squeeze before heading back to the living room.
Beth spent a long time staring into the darkness while lying in bed, trying to figure out what was wrong with her. When Brian finally came to bed, she pretended to be asleep to avoid any questions or interactions. Before long, Beth was treated to the slow, rhythmic sounds of Brian's breathing as he drifted away. Sleep eluded her for some time, unfortunately.