I think it is a bit of a lottery whether she gets the visa or not. My g/f applied and was refused, despite me providing more than edequate proof of my own financial position. The reason she was refused was that she couldn't provide any evidence of her own economic position (ie, no job and no bank account) and they didn't feel that she could demonstrate a reason to return to the Phil's.
Not wishing to put you off, as other members on here who are in similar postions to have managed to get their g/f's visas.
The experience hasn't put us off, and we will probably apply again in another 6 months, but this time try to provide some reasons why she would return and hopefully evidence of income...etc.
Good luck anyway.