(~s)
In Britain, you use the expressions Your ~, Her ~, or Their ~s when you are addressing or referring to female members of the nobility or the wives of knights.
Her ~’s expecting you, sir.
N-VOC; N-PROPER: det-poss N politeness
LADYSHIP
Meaning of LADYSHIP in English
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012