“A guide dog is the eyes of a blind person and a partner, not a disruptive object or food,” she wrote.
Assembly officials told AFP that a final decision would be up to the incoming Speaker, but added that they were “likely to grant entry”.
“We are making preparations assuming Joy will be allowed in,” an official said.
The relationship of Koreans to dogs has changed markedly over the years.
Around one million dogs are still eaten every year in South Korea — where the meat is part of traditional cuisine — but consumption has declined as people embrace the idea of canines as pets instead of food.
A 2017 survey found that 70 percent of South Koreans do not eat dog, but only about 40 percent believe the practice should be banned.