Here are two options to choose from:
1) Let your fiancee open a savings account in any Bank just as long as she presents 2 valid id's (passport, SSS, company id, driver's license, TIN, voter's id, postal id etc) So you can send the money direct to her account thru a corresponding bank which will take 3-5 banking days. Ex. Barclays, Bank of London or Citibank is a corresponding bank of BPI.
2) You can send the money to any tie-up company of big banks ie. Xoom (a tie-up company of Banco de Oro) then your gf can pick up the cash even without an account maintained with that Bank. She will just be asked of a tracking number which you nominated when you send the cash to her. You will then give it to her which she will present to the counter when claiming the cash. She will just have to present 2valid id's.
Money transferred fom your account to your gf's account is automatically converted into peso or US dollar. With Western Union ( a remittance company) when claiming the cash the teller will ask the recipient if she wants it in peso or USdollar. If you will submit documents personally to the visa office then you will have to pay in Manager's Check in peso.