both ideas are good, it will depend on how well you and the girl are and how you are with new people, if you are who feel its easy to chatty up new people and can have fun with people then it would be a good thing you go, but if you the kind of shy who will feel like you shouldn't have come then you don't.
but pretty much understand if you go you will need to chat with the girl and be ready to lose if she find you annoying, what Cola says can work the same way it can backfire on you, that will depend on how you del with this kind of situation, the safer choice is not to go