Hi Ken, congratulations to you, I am sure that the outcome will be positive
About the timescale - if it was today then she will get the result NEXT day - that is I guess due to handing the application between the Embassy, VFS and Aboitiz2Go (couriers) - so no worries about it.
Is your Arlene from Metro Manila? If she is then she can expect the delivery tomorrow (better to say "today" as it is new day already in Philippines). Just tell her to be at home as the courier would NOT leave the package with anybody else even if that person will produce IDs of you fiancée as it is classified as "confidential" and "strictly personal". We ourselves "lost" one day due to this as my Maricel thought it will be enough to give her sis her ID, but courier refused to leave it there and they redeliver it next day.
Good luck man, time to get ready for your fiancees arrival