suffix
honorific suffix for a woman's name
Attached to the name of a woman of equal or higher status to show respect. Used in formal or polite contexts, similar to ～さん but more respectful and somewhat old-fashioned.
田中姉、お手紙ありがとうございます。
Dear Ms. Tanaka, thank you for your letter.
山本姉は本日ご欠席です。
Ms. Yamamoto is absent today.