, Basically, no need. But you/she may need proof that the property belongs to her. This is because you have to prove that you live in the place legally.
You can apply for an extension up to the due date without any issue.
If documents are completed, there shouldn't be a problem.
If documents are NOT completed, you cannot apply. Then, you will be overstaying until you can get your documents sorted and the immigration office accepts your application.
You need to talk with your employer's HR team well.
You need to check with your local immigration office. The number and the locations of photos required vary by office. Also, it depends on the office what type of map they accept, such as an online map printout, a hand-written map, or both.
Re-entry permit has an expiry date the same as your current stamp, regardless of how many days remaining.
If you apply for a re-entry permit (multiple or single) with the current stamp expiring in March 2026, the re-entry permit will also have the "valid until" date in March 2026.
, do you mean when you apply for a new visa at the Thai Embassy/ Consulate? If so, no, all online at eVisa system.
If you mean applying for cancellation and getting a 7-day-to-leave stamp, no, you cannot do it online in the first place. You must go to the immigration office in person.
That is quite normal. Appointment slots are open only up to 30 days. Slots on the next day are available at midnight. And slots are booked up quite fast in Bangkok. You may want to try just after midnight.
Also, people sometimes cancel their booking, then slots become available from time to time, so you may keep watching.