It's not easy being refused 5 times in as many months. That causes a good deal of frustration and stress besides the change in plans.... all along hoping that at least one TRV application would get successful.
Maybe a few months later when you step back from these five TRV applications, you would be able to see why we believe your girlfriend had a weak application for each of the times that she had applied. I had given a one-to-one analysis of why her applications were weak in my first post in this thread.
Perhaps, if you had sought advice from this forum before applying in quick succession, you would not be in the situation that you are currently in. Well, that's hindsight which doesn't help now.
IMO, we've come across TRV applicants from the Philippines whose personal/professional situations were much more challenging than your girlfriend's. With a complete overhaul in their paperwork + understanding how to address the concerns of the visa officer, they were successful in getting TRVs.
Your current situation does not allow for another TRV application for several months. That's the hard truth. Maybe if she establishes strong ties before she applies next summer(?) with stronger evidence, she could be issued a TRV. It is possible. Or else you may want to consider the spousal PR route