Fiance Suddenly Died

Location: Atlanta GA

3 months ago I gave my fiance Chris a credit card that was in my name to use in his business. He put approximately three purchases on it. One being his auto insurance; the other being 2 months of phone bills. And a few more for a restaurant and a liquor store. So at any rate the bill is approximately $980. Chris was going to pay it off, but before so suffered a massive stroke and after 3 weeks in ICU passed away.

His 87-year-old father and a 58-year-old brother have been dickheads to me about this whole situation since there was 3 weeks of us all being together in the hospital room and no love was lost between us. The father being the true definition of a cranky old man who wanted everything his way, and the brother going along with anything he says to keep the peace. So now they have sold off all of Chris's possessions. Chris didn't have anything in the bank or any investments, but he did have a lot of tools and several trucks. I sent the brother a text last night asking him since he had sold off all of Chris's assets to please pay the credit card bill. He responded that he was not responsible for Chris's debts.

Do I have any legal rights to getting the brother to pay this bill? Chris had no debt to pay off, and I was the only person that he owed money to (besides his father). I'm sure between the sale of his work trucks and tools there was at least $7000 made. Can I file something in court to make my debt be acknowledged and paid from the sale of his things?