In comparing Fiona Cleary in The Thorn Birds to female characters in the other two novels, she is similar to Soraya but can be considered the polar opposite of Sanaubar in The Kite Runner.
Fiona and Soraya have in common that they were involved with men before they married, but later move past the problems their behavior caused. Both women end up married to men who care about them. Fiona differs from Sanaubar in her involvement with her children. Despite a similarity in their deceiving their husbands about a child’s father, the vast difference is seen in their behavior as mothers. Fiona tries to help her children, whereas Sanaubar abandons Hassan.
Regarding A Thousand Splendid Suns, Fiona is very similar to Mariam, but seem the opposite of Nana, Mariam’s mother. Fiona and Laila both end up in unsatisfying marriages and devote their energies to children father by other men. In Fiona’s case, her husband treats her well but she has difficulty connecting with him because she still has feelings for her former lover. She also favors his son and does not tell Paddy that he is not the father. Laila also had a child by an earlier lover, but her husband is evil and abusive. Fiona can be contrasted to Nana, who became an outcast by having an illegitimate daughter, while Fiona became respectable through marriage to a different man.