Elphaba didn't say anything in retaliation, just another quick little 'hmph.' She was battling one of her many foolish battles and losing--talking to other people wasn't exactly something she wanted to do. There was a bit of a glare given to Red, though, at her fake sympathetic smile and suggestion. It was just like talking to the dolled-up ditzes back at Shiz.
Satisfied with the fact that her laundry had officially started, Elphaba took a seat on a chair (away from Red, mind you), and pulled out a book. She wasn't about to leave anytime soon, obviously.