Your gf needs to get a Schengen Visa before she can enter another EEA country. I think she needs to apply it from the Philippines as she's only a visitor of the UK. So the idea of getting married isn't possible at this time. And like what johncar said, your wife would still be considered married in the Philippines because her divorce in the UK won't be recognised in the Philippines (she's the petitioner I believe right?). She needs to get annulment to show "single" in her CENOMAR.