She Likes Receiving Oral Sex
You can make the assumption she enjoys receiving oral sex. Most girls enjoy having an orgasm and not every guy has what it takes to give them an orgasm through intercourse. If you can get it done by going down on her, she is into it. If you ask her if she likes receiving oral sex, it would be like her asking you if you like getting head. Of course you do, so she does too. She would rather talk about the other things which turn her on. Concentrate on what is unique about her, so you can get to know how to satisfy her unique sexual desires.
She Has Fantasies
Just because she has fantasies, it does not mean she wants to share them with you yet. Fantasies for women are a very intimate thing. Most are at least in part ashamed of some of their dirtier fantasies. You cannot come wielding out of the chute asking her what she fantasizes about. She will feel self-conscious and want to be out of the conversation as quickly as possible. You can talk about fantasies after you get to know her a bit better and after you have told her what your fantasies are. Respect the fact she has dirty secrets and you will get to know what they are when she wants you to make them come true.
She Does Want to Talk about Being Turned on by You
If you are turning her on, you should know it. If you have to ask her if you are turning her on, you may seem like you are taking a test. She does not want to think you are so unsure about what you are doing and see you feel insecure about whether you are worthy of her sexual attention. Simply keep talking to her and make the assumption you are turning her on and she is all wet for you. If she volunteers this information, that is one thing, but she wants you to sound confident in your ability to turn her on. So keep going and she will reward you with some truly naughty encounters.