Most Helpful Girl
Don't break up with her. Girls like her become suicidal after break-ups. I am sure she is doing for your attention, girls love drama. I would say don't see her for a week, and let her sort herself out. "Absence makes the heart grow fonder." If you see each other everyday you might get tired of each other.
Do something different, like going to a nice restaurant or a day trip.
Breaking up with her and staying with her everyday are both extreme.
Leaving her alone for a middle is better, safer and more of a balanced choice. You made her girlfriend because there was something good about her.