All women are different and have different reactions to seeing and screwing huge dicks.
When I was in my late teens I was really hot for this girl that lived in my building. 3 times I ended up in bed with her, both of us naked and ready to do the deal. After much foreplay and oral sex I was ready penetrate her. Each of the 3 times as I was about to push in she changed her mind, and said she was scared of my size and to stop. Growing up I learned that No means No, so I respected her decision and stopped. We never had intercourse she could never get over her fear.
I had another gal that I dated that wanted my cock as bad as any woman that I have ever been with. But I could not penetrate her any farther than my cockhead without her having intense pain. We tried a number of times without luck, she was very disappointed. She was friends with some gals that I had hooked up with previously and she asked these girls if they had any advice for her. They told her that I was great at performing anal sex and that maybe she should might be able to take my cock in the ass. She beat a track straight to my place, told me of her converstation with my old partners, she stripped and told me to f_ck her ass. I doubted that we would be successful, but after a lot of lube, time we made slow and steady progress until I full penetrated her. She loved it and for the next 9 months I took her in the ass at least daily.
So you can never tell how a girl might react. If you want to pursue a relationship with this girl take it slow. Have sex without penetration. Become awesome at oral sex, listen to what turns her wild. Maybe bring some toys into your bed. If that works start with a small dildo / vibrator and work up to larger toys until she feels that she can take your cock. It may take longer than many members of this site might think is worthwhile, but learning how to make a women orgasm is always worth the time. And if she end up being a temporary partner she will let her friends know that you are a great lover, a reputation that is always good to have.
Remember, having great sex has very little to do with the size of your cock, it has everything to do with your biggest sex organ, your brain, use it well. As you have discovered having a big cock does not guaranty a great sex life, but gives you the opportunity to learn that sex is more than sticking your dick in your partner and pounding away.