Thanks for the additional information. I hope that I have some good news for you.
Alright, here is what you can do. As an ex-spouse of someone who is receiving social security disability, and who will ultimately receive a retirement benefit, you are entitled to make an ex-spouse claim based simply on the fact that your ex is receiving disability benefits from social security.
The maximum that an ex-spouse can get is 50% of the other spouse's benefit, but because you retired early your actually ex-spouse benefit will be a bit less than 50%.
However, because you presently receive so very little from social security there is a significant chance that by making the ex-spouse claim that you will be able to increase your benefits immediately from social security.
What you will need to do is get a copy of your marriage license, a copy of your divorce decree and take those documents along with both your and her social security numbers to the local social security office. They will process your ex-spouse claim and tell you if you will get more money by making the ex-spouse claim. As I said, I believe there is a strong chance that you will get more money.
Here is a link to a document that outlined your ex-spouse entitlement from social security based on your ex receiving a disability benefit from social security. Once you get this new, higher benefit it will continue at that level for the rest of your life, or until your ex dies (if she passes before you do), in which case if you are not remarried when she passes, you will be entitled to a survivor benefit equal to 100% of the amount that she was receiving from social security at the time of her death. http://www.disabilitysecrets.com/resources/disability/filing-disability/benefits-for-spouse.htm
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