After her parents’ death, she married Alexander Falconbridge, surgeon and slave ship surgeon turned abolitionist, on 16 October 1788 aged 19, in Easton in Gordano, against her family's and friends' wishes. After their marriage Anna Maria accompanied her husband to Sierra Leone twice.
Following her parents' passing, she married Alexander Falconbridge, a surgeon who had previously worked as a slave ship surgeon before becoming an abolitionist, at age 19 in Easton in Gordano on October 16, 1788. This marriage was against the wishes of her family and friends. Anna Maria then accompanied her husband to Sierra Leone twice.