She can do a border bounce with an agency that takes her to and from the border. They grease he wheels at the border, usually Cambodia so it is effortless.

BUT

If you do a border run, it is very frowned upon by immigration officers when entering via air, expect a high level of scrutiny from them if you get the wrong one and there is a chance you can be turned away.

The same agencies that do these border runs also sell safe entry services at airports to avoid this scrutiny. Same concept, they make it hassle free to re-enter.

Can you share the agent’s details with me please? Also why you decided to go with her?

Agencies will do it for you, otherwise hunt around in different Bangkok Bank locations

Go through an agency to avoid the 500k THB minimum req

Requirements will be changing in January according to multiple friends in agencies that I have.