It does not sound like your wife needs to change her board at all.
I would not put anyone who can not yet jump W2W on a three stage board (I'm generalizing here, everyone has their own likes and dislikes) but the continuous rocker of the Angel sounds ideal.
Can I ask what size her Angel is? Also what bindings does she have?
Girls boards tend to come with very soft and unsupportive open toe bindings. If this is the case, changing the bindings may bring more benefits then changing the board.
Or if you have your heart set on it, just buy the 135cm Watson for her.
Technically the SuperTrip is a Melissa. (I think it may be the first female board to brought to the male market).