Hiya andrew!
Yes, I am pretty suire that she can do both in one day. I aint sure bout if she gets the sticker in the same building as I went into SMEF-COW for my CFO which was a one stop processing centre (which is closed now).
I am from Davao too. What I have done before was we booked my ticket to London for saturday then I flew to Manila on a thursday, stayed in a hotel near SMEF-COW and done my CFO on a friday. I then flew to London via etihad on that Saturday.
Try to visit the CFO website for the schedule and wait for your passport first to arrive with the VALID VISA on it.

