OP we need more information. My questions are (1) how old are you (2) why is she not ready (3) pics (4) why do you think you should be together (5) relationship history for both of you (6) what is she like.
I was in a similar situation in HS where I had been friends with a girl for a few years and she was interested in me but I felt like I was too young and emotionally immature for a relationship (I was 100% right). Then by senior year I socially sorted myself out and expressed interest, but it didn't work out and I turned down other girls interested in me because I was "waiting around" for her, even while she had a boyfriend. Looking back on it, I was a total effing chump and I wish I had taken the long view. I met my eventual wife a month after I gave up on her. From my limited experience, there's no such thing as THE perfect girl for you, but there are probably a hundred thousand girls out there that you could develop a meaningful relationship with. It's unromantic, but it's true. Also looking back, I had never been in a relationship so I had no basis in reality for what I was longing for with this girl; I was hyperfocused on just starting something with her, and it sounds like you are in that situation too. My advice is that you just chill out and do you, and you will attract people who share your values. Don't waste your time waiting around for something that you haven't totally thought through.
On the other hand, I was friends with a guy and a girl all through college. They were clearly interested in each other, but for whatever reason they never dated, they only started after four years when they were out. They're engaged now and have a house so idk maybe you should wait.