Several vendors selling fresh produce near her stall have closed their businesses due to the high costs of delivering fruits and vegetables from Kiambu County.
Traders at Kongowea market in Mombasa attribute the price surge to the rainy weather, which has made transportation of commodities to the county challenging.
Many poor Nigerians have had to skip meals and give up products such as meat, eggs and milk, while in the north the economic crisis has forced people to eat poor-grade rice used as fish food.
Dire conditions have sparked protests in several northern cities including Suleja near the capital Abuja, Minna in Niger State, and the economic hub of Kano.
Onion prices have remained elevated over the past year due to a local shortage of the vegetable.