landlady; female landowner
Refers to a woman who owns and rents out land or property. The term is straightforward and not particularly common in everyday conversation, but it is the standard word for a female landlord.
She is the landlady of this land.
Compound of 女 (おんな, 'woman') and 地主 (じぬし, 'landowner'). The reading じぬし becomes voiced as じぬし due to rendaku.