Relationships: Sarah Piggins and Lysander Green

The hateful relationship of Sarah Piggins and Lysander Green began sometime during the first book when Sarah (Nanny Piggins) realised what sort of a person Mr Green is. The two have had the same relationship for all of the books so far. It is possible that she might have felt differently about Mr Green if he treated his children better and made better choices for them instead of trying to palm them off and get rid of them all the time.

The Adventures of Nanny Piggins
Mr Green meets Sarah Piggins when she comes to the door one night. He invites her inside but realises that she is a pig and not a woman. He is shocked but agrees with her that she can stay until he finds a suitable human nanny for his children. Early on in the book, Nanny Piggins becomes resentful of Mr Green and realises what sort of a person he is.

Later, Mr Green lends Nanny Piggins the car keys and she goes against his wishes by driving the car around. This shows that she has lost her respect for Mr Green if she has gone against his wishes when he is not home. It has also been stated that Nanny Piggins "could not care less how he was at all". Nanny Piggins treats Mr Green respectfully at the start of the book but later begins to be ruder and disrespectful to him.

Nanny Piggins and the Wicked Plan
The book's title is based off Mr Green's plan to get married again and sack Nanny Piggins.