Retirement tax questions

I did a final complex 1041 in 2021 for my mother’s estate after she passed in 2020. We distributed all trust income to my sister and me. Then 5 years later we found some unclaimed stock and the proceeds were given back to us by state of NJ. The only taxable income was 5000 of interest and the attorney fee for probate was 3500. I was told to just do an amended simple final 1041 for those two items. Way too complicated to show everything again in this amended simple final. I just want to show those two items and can attach an explanation if possible. If that is okay wanted to find out about the tax on the 1500 of income and if anything needs to be distributed or just left as is?