@David *********
22 I believe they are still likely to ask to see parental permission. If I remember right she would need it to get married at that age.
Traveling alone won’t help since Filipinos seldom travel alone. It will raise more red flags.
If friends and family are not an option traveling with you is better than alone from everything I’ve seen.
Stuff like a letter form the school showing they allowed it and when they expect her back likely will help too.
Basically she likely should have been in Filipino getups for months learning all the advice.
How long have you been dating? Hopefully you have a lot of pics together and may want to print out some text chain from messenger or what ever you use.
Basically the more overly prepared she is the better it will be.
Also she needs to be confident and honest in her answers.
And from everything I have seen go thru immigration together aka have her come with you in the foreigner lane.