@Greg ****
sadly I would say your wife is NOT who you need to trust about this 😮
It is my direct experience that as a general rule a thai significant other is not the best source of up to date, accurate, entry/visa/extension information 😕
You should go to your immigration office and see what their requirement is,
There are SOME offices that won't even let you do a 90 day report if you don't have a TM30 filed showing you're registered as staying in the area served by the office 😮
Others are more lenient and with over 80 offices in the country you need to definitely check with the one where you live to see what they do in regards to TM30 filing 🙂