Slip of the tongue

It's been 4.5 months since my divorce became official.  I'm not the kind of person who broadcasts my personal business.  People that knew my wife and I before the divorce still ask how is she doing and how are the kids.  I simply reply "they're good" or "they're ok."  If they ask if I'm divorced (considering I have not worn my ring in 4.5 months, you would think that someone would notice) I'll tell them.  I was talking to one of my co-workers at my retail job and she said something about my wife.  She caught me slipping because I said "you mean ex-wife."  Damn.  Slip of the tongue.  Her jaw dropped and said stop playing.  I said I was dead serious.  She shook her head and walked away.  I don't know if she has shared the info with anyone else.  If she does, cool.  If she does not, cool.