Can my partner extend her visa for another 7 days after her teaching contract ends on a Sunday, and what should she do about her work permit?

The partner's extension of stay, which is based on her employment as a teacher, expires on her last working day (a Sunday). Before leaving Thailand, she must cancel her work permit. If she wishes to extend her stay for an additional 7 days, it's recommended to visit the Chaeng Wattana immigration office. However, immigration is closed on Sundays, which means if she arrives on Monday, she may not incur an overstay fine despite the extension running out, but she should be cautious as any new extension application must meet requirements to avoid complications.