I definitely wouldn't want to learn in a crazy 88 scott!!!
I am a big fan of the Dagger GT series- look into a GTX or GT 8.1, I think you should be able to find one fairly easily. It should fit her I think! Stsable, great for beginners, stable and easy to roll but can surf and play a teeny bit if she wants to go that route. Great for beginning up to class 4. I learned in it (along with several other rental boats) and I feel totally comfortable in mine and I doubt I'll ever grow out of it!!!
For the EZ series, she would probably fit well into the bigEZ though they are a bit harder to find used.
I hear great things about the Jackson fun series but I doubt you'd find one used very easily, they are far and few between.
Sounds like the honcho would be a good one too, though I've never paddled one.