Here you go: 15.5 oz loaded with 7 9mm rounds. Less than 1" thick.
http://www.kel-tec-cnc.com/pf9.htm
Rick will surely come on and say it's junk
, but for $265 retail and a little slide tuning and ramp polishing, the thing shoudn't have any reliability issues. DAO though...with the belt clip it disappears in the waist...can fit in the back pocket of jeans in a pocket holster without printing.
It has a kick though so your wife would probably not like it if she used it.