I can’t remember the authors or titles
The first is a picture book for young children about a dragon who grows too big for a house. I think the cover has a picture of the dragon sticking out of the doors and windows. I remember the illustration style as being similar to Pat Hutchins, especially Rosie’s Walk. The book was published sometime before the mid-90s.
The second is a novel about the Tate family. There are four girls: Kim, Frances, Kerry and Anna, who live with their divorced mum. Kim has a very high IQ but isn’t that bothered about school work. I don’t remember much about Frances. Kerry has red hair, is dyslexic and loves animals. Anna wants to be famous and gets a job on a children’s radio show.
The third book is a young adult novel set in a seaside town in France in the mid-80s. The main character is Mary, an English girl of about 16 who’s staying there. Mary dates a French boy called Joe, who later dies. I think two of the other characters were called Francine and Ziggy.