ladyship

[ley-dee-ship] /ˈleɪ diˌʃɪp/
noun
1.
(often initial capital letter) the form used in speaking of or to a woman having the title of Lady (usually preceded by her or your).
2.
the rank of a lady.
Origin
1175-1225; Middle English; see lady, -ship
British Dictionary definitions for ladyship

Ladyship

/ˈleɪdɪʃɪp/
noun
1.
preceded by your or her. a title used to address or refer to any peeress except a duchess