Should I quit my undergraduate project?
Well, I believe you should not quit your research right now.
In my opinion what you said about your research situation was very good. You should know that the purpose of B.Sc. project and research is to get familiar with research world and to do something real in the Correct Way. 

I think a helpful, devoting professor is like a gold in these situations. She can help you throw your bright future. It does not mean you should stick to this field for the rest of your life! Take it as a start for your future more professional research experiences. 

Also, you can talk to her about different fields which you like. She may find you a combined nice problem to work on.