Not 'mail-order' brides but have known several who married Filipinos and brought them to the USA. Only one I know that stuck around and stayed married died a few years back after being in a nursing home for a few years for some kind of dementia and she was just middle aged too. Nice lady.
All the rest skipped out relatively early in the marriage. A common reason was they were very lonely, missed family and lifelong friends and/or couldn't adjust to cultural differences.
To be fair, though, some married men who were just selfish azzholes anyway and likely couldn't take any more of their crap.
