First question, do you have a VISA or an extension (90 days or 1 year)?

I believe your only physical contact with the embassy is to pay, so, no, 99% they won't take paperwork from you.

The embassy needs what they ask for.

I believe Chonburi will let you apply up to 30 days in advance.

@Ellie ******

Very good point

Are you sure? With an extension of stay, not a VISA. " a yearly extension of stay in their current passport which means they CANNOT simply travel with both passports (like people with valid multi-entry VISAS can)

They need to go to the immigration office that issued the extension and get the extension and any valid re-entry permits moved to the new passport before traveling.", that is the current advice.

So she has an extension, not a visa. It would be prudent to move the stamps to the new passport prior to leaving the country.

Use the place she will stay first.

That she got in a foreign country, valid for just 90 days ?

Does she actually have a VISA ?