She has to file, it really has nothing to do with u. But before u file ahe should have several visas from other countries first to prove to usa embassy that she is trust worthy. Usa is the hardest to apply for, so make sure she travels plenty to other countries first. And remember the embassy in Thailand bans you forever if they don't like you from ever reapplying again. So don't mess up her possible only chance
Has to be a marriage visa...just fyi I know an American with two adult Thai children, married over 30 years to a Thai, has tons of property, money etc....still was denied.
Just FYI, msg is not bad for you. The falsehoods of msg actually have a racist background in the usa those rumors were spread to stop people from eating Chinese food. Before u get on your soapbox, learn your facts.