Had posted yesterday regarding friend wife that entered Thailand with 30 days entry exempt stamp. As she has kids studying here was entitled to non imm O but messed up in Italy. On suggestion from Robert Lagas she asked for letter from school (they gave her the standard one) went to immigration entered at 8:00 am was all done by 11 with one year extension. Note all paper work with bank letter and money was done they just didn’t get the correct visa in Italy. Thanks very much for the help. Saved a lot of trouble!
TLDR : Answer Summary
After entering Thailand with a 30-day entry exempt stamp, the speaker's friend's wife successfully obtained a one-year extension on her visa by following expert advice. She gathered the necessary documentation, including a letter from the school and a bank letter, which facilitated her application at immigration.