The neighbor dilemma: three douchebag options

1. I could slide a platonic-ass note under her door with my contact info. But that would be creepy as shit and likely make her feel unsafe.
2. I could tape my own contact info onto my own door. But that would put the onus on her to approach me first.
3. I could forget about her entirely and move on with my life, but that would be contributing to the massive societal problem of youth loneliness.

I really can't decide, but among all these the contact info on my own door sounds least bad.