Does not sound like a marriage out out love
Well the lady herself keep saying is for the kids so definitely not for love of the guy. Let's be realistic here, no matter how she protests the wealth of the 65 year old guy is definitely a factor but i can't find in my heart to condemn her for that.
My reading is the poster here was hurt in her last marriage, probably think with the stigma of divorce no guy would want her (that's what the older man was counting on I bet), so any guy nice to her and her kids , plus have money , she feel grateful
She also strikes me (based on earlier threads) as a nice soft hearted lady, bit naive , easily flattered , passive type probably needs (maybe even has so for her whole life -.) a strong father figure to "take care" of her not just materially but also for making decisions. Girls like her in her generation are uncommon that's why this 64 year old guy targeted her. Very smart.
That's why I think for her this type of pairing might actually work.
Such age gap r/s will have a big power gap due to the older man's experience and wealth. Some woman get into such r/s and as they grow older resent this. This lady I suspect might not, since at 33 her character is more or less set and she probably is attracted to this type of man giving her guidance (Western lingo is red pill woman)
That said some such man can become very abusive and controlling once married. The fact that he treats her "respectfully" for one year may not be sufficient evidence either way.
If the guy treats her as kindly after the wedding as he does now I would think she would be if not blissfully happy at least content and that might be enough for her.
At least for a time....
I am also assuming there is little drama over kids, inheritance etc