Lisa Marchant suffered second- and third-degree burns on her left side after an extra-large cup of green tea spilled on her lap following a minor car accident in February.
"It just stops your life. I'm still not back," she told CBC News.
CBC Toronto's Jeff Semple visited several fast food restaurants on Wednesday to check the temperatures of tea and coffee beverages.
The average temperature of tea ranged between 80 and 90 C, hotter than a cup coffee.
Tim Hortons said the drink is served at that temperature for optimum flavour.
"A cup of tea doesn't have to be that hot," Marchant said.
There are currently no regulations governing the temperatures of hot beverages at restaurants.
Marchant says she doesn't plan to take legal action against Tim Hortons, but wants the government to pass legislation on safe beverage temperatures.