Ellie is a monster too! I'm a mean catmom and have employed the use of a spray bottle.
It's the only thing that gets her to stop biting me when she's in playmode! We play a lot, but when she gets too rough, i gotta get mean. T_T also when she starts chewing on my computer charger cord. I've already had to replace it once. She hasn't quite figured out how much is too much. Emmy tries to teach her, but she gets too excited. Emmy is a gentle giant. She is so passive and sweet.