"Are you offering to cook for me?" she asks, brows arched. "I'm definitely going to need a drink for that."

There's a hint of mischievous, teasing humor in her eyes as she grabs the bottle to take a swig. It's very 'sister in her sister's apartment for the first time.' It's very...normal.

Which really just means that it's weird as hell under that thin skin of normalcy.