If she gives you one word answers better to give her strong non-verbals and show her you are comfortable with the pauses. She is testing your balls to be outcome independent and not care how the interaction goes. You clearly care about the interaction, practice not caring, practice being okay "fucking up" and find amusement in that. Find the whole thing amusing and she will give you something, if she does not she is probably waiting for her boyfriend or friends and doesn't want to be seen with a random guy (nothing personal to you).

Hope this helps