You asked:

Do children have a right to obtain back alimony father owed mother when she died?
Additional Details:
My mom died in November, and my father owed her 6 months of back alimony- he was to pay until he or she died. Do her children (myself and sister, both adults) as her beneficiaries, have a legal case to obtain that back alimony he owed?

I am sorry for your loss.

Your mother's estate would have a claim for any money owed to her. You should talk to an attorney who is familiar with Probate and Estates.

Stu Shafer