Why does monna giovanna insist on marrying federigo in the end?

Monna Giovanna insists on marrying Federigo in the end due to a combination of factors, including her recognition of his unwavering love and the sacrifices he made for her. After the loss of her son, she finds solace in Federigo's genuine affection and dedication, which outweighs her previous reservations. Additionally, their union represents a chance for her to honor her son's memory and find a new beginning with someone who truly values her. Ultimately, her decision reflects a shift towards embracing love and companionship over societal expectations.