trinity culley , from fingringhoe , essex , used the knowledge she gained from watching the baby-birthing programme which she secretly viewed in her bedroom after her mother told her it was too graphic .
but when her mother dee culley 's waters broke two weeks ahead of schedule , she sprang into action .
within minutes she had helped deliver her baby sister , jasmin elizabeth-rose , who arrived in the family 's front room weighing 7 lb 1oz .