Woohoo!!!!

She was on the boat! Thank you so much cando and Judith!
I wonder about the Charles Hurr(a)y bit... Not sure how they got Charles from John Steadman? But the other bits match up so well.
HURRAY Charles (Master)
Elizabeth (Mrs) the wife, Elizabeth Grindell
Emily (Miss) the daughter, Emily Jane (the second one)
John not sure here, I thought there was one son, John Robert...
Robert (Master)
Louisa (Miss) the daughter, Louisa Ann
Perhaps they left Elizabeth jr. behind and she came out later? Or she's just not listed here...I have her marrying in Victoria in 1857...
The Trove article lists "John Hurry wife and five children, Miss H Hurry", so perhaps it's just an oversight.
So happy to confirm the nursemaid theory! Thank you all again for your wonderful help.

Now I'd just like to confirm the birth date of Harriet's first child (Ellen Clara HURREY, can't find a birth record) as her death date suggests Harriet might have been pregnant while Elizabeth GRINDELL was still alive... Naughty John!