If your passport is on the approved list why not take a trip to Perth Australia go the Royal Thai Consulate and apply for another 6 month METV...now you will get pessimistic responses saying you will not be let into Thailand, but remember TiT there are no absolutes about anything, so if you choose try it...
You could get an Ed Visa or you can go to Perth Australia and apply for a 6 month METV that will give you 9 months with extensions and Out/Ins...or being that you are a woman if you get married the path to Thai Citizenship is super easy...good luck