Speaking as a vegan, if she's lacto ovo vegetarian the obvious choice would be a whey blend or egg protein, depending on what she's able to stomach easier. If those two are out of the option or she'd like a vegan option, Brown Rice and Pea proteins are great options and only relatively low in methionine and alanine respectively.
While I don't believe all the nightmare stories about Soy and what consuming it will do to a person, I find it just as easy to avoid it when dealing with protein powders as she likely has Soy in her diet elsewhere and variety is always a good thing.
It's okay, but I found it to be pretty chalky/dry. Nutribiotic is a little better in that regard.
This is definitely worth repeating. Especially if she's not into training and/or drinking any shakes, it's got to be flat-out delicious or she probably won't continue with it.
I know that, for example, I can give my gal and her kid chocolate Metabolic Drive in milk without telling them there's protein powder in it, and 9 times out of 10, they think it's plain old chocolate milk.