Stew,

As what baboyako and Lady j says, its all true! She have to proved to the embassy that she will go back to Phils before the visa expired.

How many days now since your application lodge in the embassy?
You can call the ukvacs for the reference no. so u can track the status of your application.

2nd options:

Y not try to apply fiancee visa?

Since You've visited her 3 times in just over 10 months, im sure you have loads of evidence to show to them. Do a research about fiancee visa here in the forum, you will find all the answers to your questions.