Trying to help Cambodian friend w/ visa issue leave Thailand

[worldexpress]

My Cambodian friend has had enough with the verbal abuses and wants to go home. But she just realized she hasn't filed a TM-7 Extension of Stay when she switched jobs a year ago. Her work permit is still valid and she is still working. She also has not filed any 90 day reporting either for at least the same time frame. I think she just assumed a work permit was all she needed, with no one telling her about the visa requirements. If she just shows up at the airport to leave, will she be subject to being detained? If a fine at the airport is an easier and cheaper way to deal with the situation than trying to resolve it at the immigration (and possibly needing an agent) before leaving, that would be preferred. Her English and Thai are limited.

[DrJack54]

27 minutes ago, worldexpress said:

If she just shows up at the airport to leave, will she be subject to being detained?

Thinking this is best option. 

Seems she didn't change employment correctly so is in overstay. 

She wouldn't be detained at airport and most likely the 90 reporting doesn't come into play. 

Being fined is set at 500/day up to maximum 20k baht + ban

 

[Briggsy]

When did the latest permission to stay expire as shown in her passport?