Thanks, Erin. :) I thought it was okay that they used a different actress, I mean, Karen's appearance in 3x10 was really short, so I wouldn't necessarily have recognised her features (if I wouldn't watch each episode a gazillion times that is *g*), but I was really disappointed that they didn't even make an effort with the most basic thing like hair colour, which could have easily been changed through a wig or dye.