just to add my tupence worth.
used xoom a few times, its slow (3-4 days) and expensive.
used western union, very expensive (30quid) but VERY fast (10minutes) you can send US dollars also which is good if she is flying out of the phil. and obviously western union shops everywhere.
now i use the manilla supermarket (upstairs) in earls court. I do it in person, costs 6quid & is there the next day. I'm sure you can call them up and send over the phone - but you would probably need to visit first to set up the account (id & utility bill).
you can also reload smart/globe phones there.