@Jennifer *****
if you are getting a yearly extension based on raising a thai child you WOULD need to meet the proof of funds of 400K baht in a thai bank account in your name only OR proof of 40K baht a month in salary by legally working here with a work permit.
It's only the "married to a thai" extension where a foreign female married to a thai male has no requirement to show proof of funds. For raising children you still do show the funds