Hi Specimen,
The Airush DNA is a good kite for beginners. We use them in our school, among others.
The relaunch is easy, they are very grunty, and are very stable. Not super upwind friendly but good enough for beginners. If your wife is very petite she may have issues with the trim cleat on the chicken loop and will probably have difficulty reaching the bar when released as the depower line is VERY long.
Good kite in all other respects. Another kite to consider is the 2008 7m Ozone Light II, or even the 5m light II. They are now available as ex-demo.
You are welcome to come and visit us and demo both the DNA and Light II.
Good winds,