Wa alaikum salaam,
My sincere advice is, keep things simple and be generic.
Dont ask her about any major specifics or press her about certain feelings on things.
You want to may be just start with what you do, what you like, and ask her the same kind of things in a way as you would when you meet someone new.
I'd get a pen and paper and just jot down some simple things about what you would want to know about a future spouse and formulate a broad set of questions around that in your mind, after that, if she asks you and you ask her, before you know it, time will have passed and the conversation (if you get on well) will start flowing itself.
All the best