Her friend's female, too, Scotsbard. She says her favoured duet has no title but begins "When I go out of door" and is subtitled (or would have been had there been a title) "Bunthorn and Grosvenor".

An aside: my wife's a linguistician (and also a linguist) and objects to questionnaires, etc, which ask her gender. She insists "Gender is a grammatical concept; sex is what distinguishes man from woman."