The best person to pursue this is the executor/administrator of the estate.
There is no legal relationship created or implied by the exchange of message on this website. All statements are not to be construed as legal advice but as general guidance. In all cases, an attorney should be retained to review the full circumstances and deliver advice consistent with the information learned.
If there was no executor or administrator appointed, these funds can be claimed if there was a Muniment of Title probate of her Will. That would put the money in the hands of the devisees of her Will. If she had no Will and there was no probate, the instructions for claiming the money are on the state website. It would go to your wife's heirs, not just you.
DISCLAIMER: This is not specific legal advice and does not establish an attorney/client relationship.
The unclaimed property needs to be claimed by the decedent's estate, usually by the estate's executor or administrator. The value of the unclaimed property will then be distributed to the heirs per the will or intestate laws.