Active in events linked to the former Duchy of Parma and Piacenza, she serves as the president of the Academic Senate of the Studium and is involved with the Marie-Thérèse of Bourbon-Parma International Award.

[12] Also, in July 1964, she represented her family at the wedding of Prince Guy of Bourbon-Parma, her cousin, with Brigitte Peu-Duvallon, in Cannes, France.

[citation needed] A Carlist, she supported the progressive reforms of her brother, Carlos Hugo, alongside her sisters Cécile Marie and Marie-Thérèse.

[19] As a reward for her hard work for Carlism and Spain, she was made Countess of Castillo de la Mota by her father.

[20] In 2016, Marie des Neiges visited the former ducal lands of Parma, and was received by the city of Fontanellato's mayor, Francesco Trivelloni.

[15] In March 2020, upon the death of her sister Marie-Thérèse, Marie des Neiges became the new president of the Academic Senate of the Studium in Monferrato, Italy.

Marie des Neiges was contacted by Dr. Roger Rossell, Academic Senator in charge of international relations, who asked her if she wanted to become President, and she accepted.