Sunday Mirror seems surprised by children growing up

I know it must be a bore of a job, having to try and interest people in a picture of Mel B, while trying to justify running a photo of a teenager. But... come on, Sunday Mirror:

Mel B's daughter Phoenix continues her grown-up transformation as teen towers beside her mum

"Continues her grown-up transformation". I know teenagers find growing into adulthood can be difficult, but who knew that it was such a struggle for headline writers as well?