A Window in the Door by Madeleine L'engle

A Window in the Door is the second book about the Murry family. Meg is still getting picked on and having a hard time fitting in. Her mother Mrs. Murry is a scientist and in this book she is trying to prove the existence of farandolae by studying mitochondria. Their father Mr. Murry went to Washington D.C. for a few business day. Also Charles Wallace has always been realistic. So that's pretty much what happened so far.