Britain recently donated scanners that can detect traces of drugs to Jamaica's two main airports, and in January began requiring entry visas for Jamaicans.
Jamaican officials say they think improved security is deterring some would-be smugglers.
"But we know if we let up one little bit, they'll come flooding right back," said Jamaica's top drug fighter, police superintendent Carl Williams.
Humanitarian agencies say women will keep trying as long as their families remain hungry.
"They need jobs," social worker Ionie Whorms said. "You can't tell them `don't be a drug mule,' and then not provide a better alternative."
Ward's deportation back to Jamaica in January brought her no relief.
The people whose house she used to clean, earning Jamaican $2,000 (US$35) per week refuse to hire her back. Eventually she got part-time work sorting coffee beans, but it pays only Jamaican $1,000 (US$17) a week.
Plus she has the additional expense of a fifth child -- a girl suffering from Down's syndrome born to her in prison.
Now she spends her time shuttling the baby on crowded buses to a doctor in Kingston and begging money from friends to help pay the bills.
The reality sometimes makes the relative comfort of British prison seem appealing.
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