What illness did elizabeth get and who helped her to get better in Frankenstein the answer?

In Mary Shelley's "Frankenstein," Elizabeth Lavenza suffers from scarlet fever, which leaves her gravely ill. Victor Frankenstein, her fiancé, is deeply affected by her condition and cares for her during her sickness. Despite his efforts, she ultimately succumbs to the illness, which adds to Victor's sense of guilt and despair throughout the novel.