Rosie starts to say 'mama', raising hopes that her communication will finally take off. Emily feels totally outshone by Rosie's amazing schoolteacher and concentrates on developing her daughter's sign-language, while Simon worries that the other parents of special needs children look down on him. Things come to a head at the school sports day.

Rosie becomes obsessional about Christmas, unable to understand why it can't be Christmas all the time. In 2007, Si and Em continue to drift apart and consider splitting up.

As Em gets excited about Si's annual quiz, Rosie becomes fixated on making her draw a specific picture over and over again. In 2008, Rosie suffers a frightening medical emergency.