In 1986, Mularoni graduated in law from the University of Bologna and joined the Sammarinese Christian Democratic Party, initially as a member of the youth section and later of the central committee, where she focused on equal opportunities and family policies.

In January 1993, she was a founding member of the newly formed Popular Alliance of Sammarinese Democrats and was elected for the first time to the Grand and General Council as a representative of the party, a position she held until 2001.

[6] During the course of the XXVIII Legislature, Mularoni was later appointed as Secretary for Territory, Environment, Agriculture Telecommunications, International Economic Cooperation, Civil Protection and Relations with the A.A.S.L.P., following the resignation of Matteo Fiorini.

Several politicians criticized the nomination, citing concerns over potential conflicts of interest, as Mularoni also held positions on the Board of Directors of the San Marino Economic Development Agency - Chamber of Commerce.

Councillor Gian Matteo Zeppa of the RETE Movement called for the appointment to be suspended, highlighting the perceived conflict of interests, or for Mularoni to resign from her role on the joint-stock company, which he argued was a position representing the government.