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Typically, non-O visa is not too complicated and even can be handled by you and your wife. Foreign partner usually stays in Thailand with Non-O Spouse or Non-O retirement.
Not sure how much it cost for US citizen to obtain the first non-O, but annual extension cost 1900 THB plus 3800 THB to obtain multiple reentry.
If Non-O Spouse, your wife needs to update her marriage status, obtain Kor Ror 22 document in Thailand first, then you need to open bank account and deposit 400K THB.
If non-O retirement, you must be above 50yr, and deposit 800K THB.
Required documents for typical non-O Spouse extension process can be found below. Good luck.
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