Then all of a sudden she fell to violently kissing it some dozens of times, as if she could never leave off, the child crying at the vehemence of an onset which strangely combined passionateness with contempt.

from Thomas Hardy – Tess of the D'Urbervilles Chapter 14: "Maiden No More" Lyrics on Rap Genius

Meaning

The worst part about having a baby from rape: your greatest love is a creature that is half your rapist

Perhaps Tess kisses the baby so violently because she is trying to kill it with love

(cf. Brenda’s Got a Baby)

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