Entry bans start after 90 days overstay, providing she isn’t arrested or randomly asked to show her passport. She should leave and pay the fine at the airport.
You can get a (multi - if needed) re-entry permit for your SETV. doesnt extend your stay but allows u to leave thailand without losing your visa. For the dates given 60+30days seems to work?
yeah, its cash they wanted to see, not statements or credit cards for the 2 reports ive heard where guys were detained and forced to fly elsewhere: Only 2 out of thousands of daily arrivals.....so really the chance of being asked is very low, but as the outcome was pretty severe, for me, as a long term tourist, i will make sure i carry the cash.
Not that strict, but if you have a history of staying long term in thailand (profile says you live in CM), then you should carry 10k baht or currency equivalent, just in case