Hi Englishman,
I think if it's her last wish you should do it,but I think that you should make them come and get it from you and do whatever you wish beforehand,after all think of all the wonderful spiritual truths you might learn.. Hey,the brothers may even say that you should keep them as they would undoubtedly benefit you spiritually.LOLOLOL.....
As for the money I'm sure you would have some interesting ideas on how you could give them their gold.....
My advice would be to follow your mum's wishes but make them squirm....
Regards Welshman