I am in need of the title of a certain book about two sisters who move to a new

Question: I am in need of the title of a certain book about two sisters who move to a new town and one gets sick!!?

PLOT; ECT;
the book was in my sixth grade library, so it was for kids along that age level!. [not adult nor childrens]
it was a chapter book!.
it took place like fifty years ago and there are these two sisters and their dad, whom is a single father!. they move to a new town, because her dad got a job working at a car factory, and her older sister, her idol, suddenly becomes mentally ill and plays with fire, hurts herself, ect!. i really would like to know what it was called!Www@QuestionHome@Com

Best Answer - Chosen by Asker:

"Memories of Summer" by Ruth White
http://www!.amazon!.com/Memories-Summer-Re!.!.!.
"In the 1950s, Lyric's widowed father moves her and her sister, Summer, from Glory Bottom, VA, to Michigan, hoping to better their life!. Like other rural Southerners, 13-year-old Lyric and her family initially find adjustment to urban life difficult, but Lyric has an even worse problem!. Her beautiful older sister has progressed from being afraid of electricity and dogs to speaking incoherently with nonexistent people and disfiguring herself!. Lyric shares the care of Summer with her father, leaving her with little time for after-school activities and a dread that her new friends might find out about her sister's mental illness!. When Summer becomes consumed with setting fires in the house, Lyric and her father know they must make some changes; after she injures Lyric, they are forced to institutionalize her"Www@QuestionHome@Com