Go to the main Bangkok bank silom Rd bang rak Bangkok with a letter from immigration or your embassy and lots of money to put in the account and they will be happy to help
yes I did have a surprise request from the immigration officer asking me for the id and letter from the landlord to the condo lucky enough I was 5 days early 😀
They need to know that she will be coming back to Thailand
So kids and family will help and a condo or home she owns with a job to come back to
Also she will need to provide evidence that she's got money for her holiday. And if its you that she will be coming to see you will need to provide evidence that you are happy with the arrangement she will be coming to see you and you have money as well