A wife person is a lady, because I guess ladies are wife people? I'm guessing this is pretty sexist somewhere, somehow, but words were made a long time ago so hopefully you can give all those dead people a break.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
That lady is getting out of hand. What should I do?