it's a sad situation. Sadly I'm talking from experience. I was married to a Filipina and was used and abused for everything she could get until I couldn't take anymore. Then I got nothing but stabbed in the back because the walking ATM stopped working. I even got put in jail for a month because she made a fake case against me.
I'm moving to Pattaya next month to get away from this.
One of the main criteria is that she has something to return to like a business she is running or the owner of, kids or similar that would not make her run off.
And she needs loads of money in her account, not some money somebody has deposited for visa purposes, they will want to see lump sums from income .
Good luck but it's probably easier just for you to go to Thailand