It is also intersting that Harriet disappers from 1841 when she should have only 2. Perhaps she was being brought up by Maria's parents in Tibberton
She was in Tibberton - though bear in mind it only means she was there for census night, not necessarily that she was being brought up by anybody other than her parents.
1841
HO107/905 book 6 folio 3 p1 Tibberton in the parish of Edgmond
John Fletcher 76 Farmer Mary do 69 John do 45 Ester do 43 Theophilus do 39 Mary Littleton 30 Works at the P. Mill (?) Harriott Jarvis 2 Lodger