Steve....
I guess your wife must be flying to London. As the stopover in Amsterdam is much shorter with KLM than with Etihad for us (2.5 hours compared with 4). Ethihad is considerably cheaper than KLM to Manchester, one way. But in our case I am meeting my wife in Amsterdam. And she isnt too keen on flying on an Arab airline for some reason.
You say you could not put Manila. How do you mean? I simply phoned Expedia and they booked the ticket from Manila as the point of origin.