Planet Janet In Orbit by Sheldon Dyan
Exams are over, love is in the air and Janet's summer is already down the pan. Not only has the Mad Cow (her mother) got a new, right-on boyfriend with two daughters from hell, but she is expecting Janet to get a summer job! Add to that a lovesick dad, a best friend going gooey over a gorgeous Australian and a suffering pregnant lesbian aunt and you'd have enough to send anyone into orbit. Welcome to Janet's planet...