NO! DO NOT ASK HER OUT! Unless, of course, you want to hear 'no' for a third time. If you really like her, be her friend. DO NOT ASK HER OUT ON A DATE. If you are still interested, you need to just hang out with her, with no pretense that you are 'going out'. Make no 'move'. Ask to go out with you and your friends to a movie or ask her if you she would help you pick out a present for your mother or a girlfriend or something and have no idea what to get them. Just spend time with her as a friend not a girlfriend. If she likes you, trust me, it will be very obvious.