Charles Spight 33 with his Dad and the North's and William Marsh in 1891 is 23 in 1881 census, so yes the right family for sure.
We know Alice was in service.
Just need to find 1871.
Got them as SPITE, Market Lane Glanford Brigg
Charles 59, Mary 56, Alice 15 at home with parents, Charles jr 12 roper, Sophia 9yrs.
TinaM

Added: Yes they were sisters, Alice 5 & Mary Jane 9 in 1861 census with parents as SPITE again, another sibling Emma 23 and little Chas 2..
If you ever decide to trace all these siblings, your tree will be a mile wide
