<human>: Can you condense the text into three sentences or less?

Good evening,

About 10 months ago I met a wonderful young lady, got to know her, and decided pursue a relationship with her. She has a daughter who is now 2 years old that she raises along with assistance from her family. We moved along very fast and fell harder and harder for eachother, but lately the way things have changed have made me realize that she is not the woman that I want to spend my life with, and I want to end this relationship. I feel like I'm trapped though because I feel like it would be wrong to walk out of the child's life after she has already become attached to me, especially since it's something I can relate too since it happened to me.

I fell for her originally because she was a hard worker who was motivated about being the best mother she could be even though she had such a huge setback (pregnancy at age 15). She's amazingly smart and knew she would have to step up and do her best to be able to provide for her daughter, and for the most part, she has. But about half way through our short relationship, I noticed a change in her attitude. It was as if she was convinced that we were going to get married and I was going to provide for her and her daughter forever, so she began to lose her motivation, lowered her goals, and almost dropped out of college until I convinced her that that would be an awful decision and I wouldn't support it. Even then, she's taking less classes and slacking in them. I'm tired of it and don't want to put up with it anymore.

But then every time the thought of ending the relationship creeps into my head, I think about the daughter and how I felt when it happened to me, and I just can't be like my own father. So I'm stuck, I don't know if I just stay and be miserable, or move on and leave a child without a father like my father did me.
<bot>: Want to break up with girlfriend, but don't want to leave her daughter without a father the way mine did to me.