For a lot of people that became a young adult in the sixties and seventies this probably will bring back memories. Good and bad.
The book describes daily events, the bond between an older brother and younger sister. Because of some of the subject matter covered you would expect a dark depressing book. Instead is shows that lives continues. Some of the subjects are the secrecy around mental illness, abusive parents, sexual harassment in the workplace, domestic violence, guilt feelings about not taken care of an elderly grand parent and more.
The main character Ellen is well developed. You get to know her and she could easily be the girl next door or your best friend. Not everybody will relate to this book but I think a lot of people will.