Mackenzie Rosman plays Ruthie Camden on the hit tv series "7th Heaven."  Ruthie is the youngest daughter and was the youngest child until the 3rd season with the birth of her twin baby brothers.  Ruthie has always been bright.  After a teacher called Ruthie stupid during her 3rd grade year, Eric and Annie got Ruthie out of that class.  But when the problem followed her into 4th grade, Eric and Annie learned that Ruthie's test scores were so high that she qualified for a full scholarship to a local private school.  Ruthie is now in the 5th grade, but after problems involving the issue of prejudice, Ruthie quit private school to go back to public.  Fortunately, Ruthie had already made peace with the teacher who called her stupid.  Though she hung out a lot with Simon when she was younger and even shared a room with him, she seems to spend most of her time alone lately. Ruthie now shares a room in the attic with Mary and Lucy, letting Robbie have her room which was originally Mary and Lucy's room.  Though in May 2002, she reclaimed her room and kicked him out to the garage.  She finally talked it out with him and Robbie got his room back and Ruthie moved up to the attic (that was complicated).