That makes much more sense.
There's a big price difference between the two as I'm sure you know. From what I understand, if you decide to go drysuit, don't skimp buy getting a cheap one. I hear it's basically all or nothing when it comes to dry suits. If you have the $ to spend and you think it's justifiable, a good dry suit is the way to go.
On the other hand, Id think she'd be fine with a spray suit over a full length wetsuit. This is a tough combo to beat for the $.
Just my 2 cents.