The buzz startled her this time, and she nearly spilled acid on herself. That wouldn't do, and she had to stamp down the inner voice that sounded far too much like her mother that wanted to storm through the apartment, yank open the door, and start yelling. Her head tilted as she went through a list of people it could be with a bit more consideration than she had earlier, eyes dancing around her lab with the thought.
Her eyes snagged on one of the wrappers of protein supplements and her stomach rumbled in dissatisfaction at the mere sight of one. Perhaps she had been in here too long, if her body was revolting against her. Thirsty too. See, this is why she hated her concentration being broken, it made her think about unimportant things.
Finally her hand reached up to the button on the wall that connected her to the intercom downstairs, "Whatever you're selling we aren't buying." 'Ro bit off into the speaker, feeling like she had accomplished something human enough to go back to to the specialized explosive she had been working with.