I'm not going to hang out with my friend even though she drove two hours to get here.
Why wouldn't you spend time with her after she drove so far?
She's a friend of a friend and I don't really want to spend time with any of them
Even if  you are not that close, she could feel hurt that you don't want to see her after she traveled so far. It would be good if you saw her and maybe you can become closer friends after spending sometime together.
She doesn't even know what's been going on in my life. Besides, she's not even my friend.
You could at least spend a little time with her. She must like you, or she wouldn't have made such a big effort to see you. If you feel you have nothing in common with her, you're free to decline future visits.