My iPhone 4S won't connect to neighbors Wi-Fi?

I have a iPhone 4S, I tried to connect to my neighbors Wi-Fi but every time after I put in her Wi-Fi password, it keeps saying " unable to join the network '___' ":( I went into her house to check out her Wi-Fi router, but i couldn't figure it out… Can anyone help me? Why does my phone keep saying that its unable to connect to my neighbors Wi-Fi?

I don't know if you are trolling or not… But. This made me laugh!

Maybe she has you blocked using Mac Filtering. Have her log into the Router to check the settings!

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