Tumelo has again lost several days at school because of sickness.
"My eyes are burning. Sometimes I can't breathe," she coughs.
"The doc said there is nothing we can do," says her mother Nono Ledwaba. "We need to take her out of eMalahleni. When she goes to her grandma in Mafikeng, the symptoms disappear."
The 14-year-old lives in house number 3094 of eMpumelelweni township in eMalahleni, part of the Highveld region in Mpumalanga that had turned over to mines and power plants that, according to activists, are killing local people.
Tumelo Ledwaba (R), who is suffering from respiratory problems, and her mother, Nono Ledwaba, pose for a portrait in their house in eMpumelelweni Extension 6, near eMalahleni on June 13, 2019. (Wikus De Wet, AFP)
Her neighbour in 3095, Lifa Pelican, has similar symptoms, which badly set back his schooling. At 25, he never moves without his inhaler, even inside his chilly home with rough-hewn walls.
"If I don't have it with me, sometimes I can't breathe. Sometimes I feel I am going to die," he says.
"These mines get a lot of money and we suffer. There's solar power. We don't need to use these coal plants."
Green energy such as solar and wind power account for less than 2% of electricity production in South Africa, while coal still provides 86%.
Lifa's breathing troubles began after he moved to eMalahleni, at the mercy of gritty coal dust and thick whitish smoke of electricity power stations burning fuel day and night.
Relief comes when he visits his father in Nelspruit, about 200km away, trips that feel like a new lease on life. "I don't use the inhaler."
Tumelo's own troubles began when the family moved to eMalahleni in 2007, when she was a toddler.
A breath of fresh air
The trips to Mafikeng are literally a breath of fresh air - her grandmother's home is 400km from the mines.
"The only solution is to close down the plants, but will this happen?" Ledwaba asks.
eMalahleni, which means "the place of coal", is among the worst places in the world for pollution by nitrogen dioxide and sulphur dioxide, according to Greenpeace.
'Deadly pollution levels'
South Africa, like many developing countries, has placed a heavy bet on coal for its development - a fuel that is plentiful, cheap and locally-sourced.
But campaign groups say health and climate costs are high.
Two environmental non-governmental organisations, groundWork and Vukani, say they have identified the top culprits.
They include 12 coal-burning power stations run by state-owned Eskom along with a plant for liquefying coal and an oil refinery.
Pollution from these sites was responsible for between 305 and 650 premature deaths in 2016, say the two NGOs.
They have initiated a suit against the government for "violation of the constitutional right to clean air" - a legal first in South Africa, the leading industrial power on the continent.
The NGOs contend that the government has failed to reduce deadly pollution levels in the area, just an hour and a half's drive from Johannesburg.
"It has evolved into a public health crisis," says Tim Lloyd, lawyer for groundWork and Vukani.
"The cost of the air pollution to our economy each year is around R35bn."
In response to the accusations, an environment ministry spokesperson told AFP that SO2 (sulphur dioxide) emissions have "shown improvements across all the five monitoring stations" in the worst-affected region of the Highveld.
Criticism by environmental groups "fails to recognise these improvements', the ministry stated, declining to give further details about the data.
"The reality is that the desired improvements will not happen over a short period of time," it said.
Eskom admitted the area's pollution problem "requires urgent attention", adding that domestic coal burning, traffic and mining dust were also to blame.
'The life of my kids'
"When people from other provinces come, they start getting sick with respiratory issues," says Alexis Mashifane, a doctor with a busy practice in Middelberg, 30 kms from eMalahleni.
"When they leave this area, some of them get better."
But many have no choice, saying they are stuck in the toxic region for economic reasons.
"I wish to move away because this place is not right," says Mbali Mathebula, a single mother who is raising a small daughter and a baby girl, both suffering from asthma. "I don't have money to buy a house."
In Mathebula's home at the foot of the Schonland coal mine, five-year-old Princess plays with the useless mask given to her mother at hospital.
Mathebula, a supermarket employee, could not afford a R1 130 oxygen machine to attach to the mask.
If a child has an asthma attack in the night, Mathebula says she has to wait until the morning and then go to hospital. "Sometimes I don't have money to go there. I must borrow."
Her neighbour Cebile Faith Mkhwanazi has to cope with her 3-year-old daughter's asthma attacks.
Cebile Faith Mkhwanazi and her daughter Melokuhle Buza, who is suffering from respiratory problems, pose for a portrait in their home on June 13, 2019 in eMalahleni (Witbank). (Wikus De Wet, AFP)
"I'm thinking of taking them to my mother," she adds, broken-hearted. "So that they stay there forever for their health."
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