[2][better source needed] She received a prime education, beffiting of her social status: she spoke English and French, and could play the piano.

On 24 August 1911, her husband became the first President elect of the Portuguese Republic and, by extension, Lucrécia was made the first First Lady of the country, aged sixty-six.

In spite of her pro-monarchy convictions, Lucrécia supported her husband, and moved with the family to Belém Palace, where she was mostly dedicated to the home, per the "female habit" of the time.

[1] On 4 October 1913, she presided over an afternoon tea for the children of the National Press employees, having been received as the wife of the Head of State.

The following day, on the third anniversary of the instauration of the Republican regime, she attended a play at Teatro Nacional de São Carlos, but was not offered a seat in the presidential tribune.