姐
ソ, シャ, あね, ねえさん

elder sister, maidservant

JLPT0 G13 S0 F5000

As per 且# (pile) + 女 woman → *elder/eldest sister* (← female figuratively atop the sororal pile; compare 狙) → *young lady* → *wife of a gangster boss*.

[Full Kanji Etymology List]