Well, if we'd really be exactly alike, we wouldn't be enemies, because both of us would share the fear of being hated.
But I like talking with people who have different opinions every now and then. So I'd probably not want to talk with her too much because I'd know she'd just reply: "That's so true, I'm totally agreeing with you" or something.
On the other hand, she'd also be the only person in this world who could fully understand the power and symptoms of my diseases. But I'm not sure if that would be helpful at all, seeing that if we'd get into a depressing situation together, we wouldn't be able to help each other anyway xD