I cannot control my Mom. Any advice?

Ever since my Dad passed away a couple of years back, my Mom and i have not been the best of friends. I have a younger brother and i am the eldest. I handle the finances in the house and my Mom's job is ro spend them all. She is like a beast without a leash in wasting money. She does not have mercy on me and has an extremely strong personality. I have tried so many ways, asked so many friends she listens to, but all trials in vein. I have developed hatred towards my mother. All she thinks of is herself. She does not care that her children have a hard life to dig and are in desperate need of saving a bit of money. If i give her 10,000$ she will erase them in 2 weeks and if i give her 100,000$ she will erase them in 2 weeks. No mercy. I have gone into so much aggressive fights towards this matter. She fights me whenever i speak calmly thus forcing me to step up the doze. If i do not give her money, she will go and borrow from ppl thus forcing me to pay her debts. HOW CAN I CONTROL SUCH A MOTHER???