From the 1851 Census the mother in law of Samuel Boucher (60) is Mary Hethridge, the mother of Maria Atkins.
From her marriage the father of Maria Atkins (61) is James Atkins.
However, Maria Atkins (61) was either born in Salwarpe or Upton Warren around 1821.
There is a baptism in Salwarpe in 1822 to James and Jane Atkins.
Therefore at present it is difficult to know whether to trust the 1851 Census detail.
The surname of Maria as Atkins seems certain so if her mother was a Hethridge she presumably remarried after being widowed.
  

According to the 1851 Census the Mother-in-Law of Samuel Boucher was Mary Hethridge aged 66.
If her name was Atkins or Watkins when Maria was born then she may have been widowed twice.