Dube has no inclination to return to her village near Zimbabwe's border with South Africa after leaving in search of work in 2006.
Her employer in South Africa was willing to give her the job for minimum pay, but has warned Dube she is on her own if the immigration authorities catch up with her.
HELPING THOSE BACK HOME
Dube often sends money and groceries home to her grandmother and two younger siblings, orphaned by HIV/AIDS, using informal couriers who charge around 150 rand (about 9 pounds) to ferry a large bag laden with maize meal, soap, cooking oil, salt and other basic commodities now unaffordable for many in Zimbabwe.
"We (also) get a lot of people sending money, almost every week. So there's always business," said Itai, a cross border trader who operates from a long-distance bus terminal in central Johannesburg.
The station is always teeming with Zimbabweans loading goods including food, furniture and electrical appliances destined for relatives back home.
London-based radio broadcaster Tererai Karimakwenda believes that Zimbabweans in the "diaspora" have inadvertently helped Mugabe stay in power by keeping families back home afloat and averting angry riots that might otherwise ensue.
"In an indirect way it is probably propping up the Mugabe regime. But what do you do? It is the lesser of two evils," said Karimakwenda, who has been in England for six years and himself sends money home to his elderly parents every month.
"The money, food and medicines being sent back is literally keeping people alive."
Karimakwenda works for SW Radio Africa, a radio station staffed by exiled Zimbabweans which broadcasts material critical of Mugabe's government from north London into the African country.
Enterprising Zimbabweans have set up Internet-based companies through which those abroad can pay for basic groceries to be delivered to cash-strapped family back home from some of the country's supermarkets.
Johannesburg-based NowFuel enables Zimbabweans to pay for fuel in South Africa, which family and friends can then access from selected garages back home through a coupon-redemption system.
Like many Zimbabweans forced out of their country by political tension or the economic meltdown or both, Karimakwenda would go back if things improved, but fears many will never return, costing the country valuable skilled labour.
