She's never alone, always has a female friend?

Wanna ask out a girl in college but she's never alone. She's always with someone when I see her, and I mean ALWAYS. Every day this week. She has a close female friend in school and they go everywhere together. I'm not a chicken and I would ask her out in person, but I can never get her a part (I'm serious!). I feel too desperate to ask her if I can have a few words in private. Both of us are decently shy so I'm wondering if asking her out via social network site might not be a bad option? I don't want to do phone because she is not a native speaker and has told me she doesn't understand phone conversations well. If she really likes me, wouldn't she accept a date via a social network site?

Suggestions?
She's never alone, always has a female friend?
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