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I am sorry to hear about this situation. Unfortunately, the alimony is still enforceable. She can domesticate the Texas order in GA to compel payments. Under Article IV, Section 1 of the United States Constitution, known as the "Full Faith and Credit Clause," GA will recognize the TX decree and its alimony provisions after a quick domestication filing. And yes, she can enforce it by hiring an attorney in GA even if she is in Canada (she may have to make an appearance in court, however).
The better thing to do would be to file for a modification of the decree, asking the Court to modify the alimony based on substantial modification of circumstances. If someone in your situation can show that there has been a significant change (your remarriage, her remarriage, your loss of income, her gain of income, a prolonged illness, etc), the Court is then likely to modify the alimony downward or void it all together. The final call remains that of the Judge on a case by case matter, however.
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