As national deputy, Regidor formed part of the parliamentary commissions on Pensions and Social Security, Labour Legislation, Political Trials, Families and Childhood, and Elderly People. She was a vocal opponent of the legalization of abortion in Argentina, voting against the two Voluntary Interruption of Pregnancy bills that were debated by the Argentine Congress in 2018 and 2020. During her speech during the debate on the 2018 bill, she made a controversial analogy with dogs, stating that "when our dogs get pregnant, we don't take them to the vet for them to have an abortion; we give away the pups." She later introduced an unsuccessful bill to establish an "early adoption" programme.
