What baboyako said is true!
If you have a relationship with a filipina you should get her fiance visa instead of tourist. If you have applied her a tourist visa, the ECO will think that she might not go back to Phils specially if she don't have job, savings, property etc left in her country.
Anyway, if she get a refused on her tourist application then apply her a fiance visa next time, I'm sure she will be fine.
Goodluck!
