I have no clue what to make out of this

I am a 30 year old physician living in US. I am great friends with one of my colleague and we happen to be ethnically from same part of the world though different religions and background. Our friendship started suddenly one day after work when she offered me a ride home and we talked and talked and talked even went to eat before she dropped me off home. After that we struck off immediately and she would always ask me what time im a leaving for home so she can drop me off( i dont drive i take a train to work). she would even wait and keep doing something else until i was done with work. We have a lot of things in common especially love for shoppin so we started shoppin together including a 8 hour trip to neighbouring city to shop when she was post-call and awake all night. She kept insisting that she is fine and would like to go w me. But on the other hand she keeps giving me mixed signals. We always discuss the topic of marriage and she wants to get marriage since she is pushing 30. She is 28 anyways so she keeps telling me abt if she met any guy. Just a few days ago she told me “i give up on this marriage thing. i will never find anyone”. so i offered help that i will help u find someone which she gladly accepted. She is leaving for a NY city next year in JULY for her fellowship(since she is one year senior to i am) so casually mentioned that I will have to come to NY city every weekend so we can hang out together. She has so far shown no signs of any interest directly that she likes me. I dont even know if she does. All i get is mixed signals and contradictory statements abt her self and us. She did state im very intelligent, funny and cool guy and she likes hanging out with me. On the other hand when we go out for dinners and lunches she keeps asking me questions about my private life especially if i found somebody. On the other hand she does have other male friends(not this close though) but she happens to be very friendly person and has 3 times more people on her facebook than i do. She does seem to enjoy my company and keeps looking for opportunities so that we can hang out. Most people at work dont have a clue we are so close friends cos we dont talk to eachother very much at work (cos she thinks people will make up stories and rumors). she appears to be very calm cool and caring but yet suddenly she will appear very self centred and arogant. So i have no clue what to do with her. I cant lose her as a friend by asking her any dumb questions. She does state to me how her dream man will look like and what he will be. I have totally opposite of that description except that im also a doctor like her. Please need advice what to make out of this and whats going on i have no clue. help plz. i do like her a lot cos she is very cool and we are great company together but I can decide what to do cos her self centred and contradictory personality confuses me. help needed