Is the $300 refund from a final 1040 you are filing? If so, then you can file a 1310 with the 1040 to have the check made payable to you. There are a few variables that dictate whether or not you can e-file.
The corpus distribution can be shown on Line 10 of Schedule B of the 1041 as a second-tier distribution.
The loss on the sale of the home would be a long-term capital loss and can be passed through to the beneficiaries provided the home was not used for personal purposes.
