Sister from out of state threatened mom that she wants to kill herself...

I TOLD HER GO TAKE THEM SHE WAS GOING TO DO THAT SO I PUSH HER AND SINCE SHE HAS ONE GOOD FOOT ONE FOOT KNEE REPLCEMENT SHE HAD NO BALANCE AND FELL DOWN CUT HERSELF REFUSE TO GO TO DR. FOOT RED. ALL BECAUSE SISTER THREAT HER OVER ME HAVING ACCESS TO MOTHERS ACCT ,I DO HER PAPER WORK , BROTHERIN LAW SISTER HUSBAND DOES HER INCOME TAX. NOW MY SISTER CALLS EVERYDAY LIKE NOTHING HAPPENED. HOW CAN I HANDLE THIS SITUATION. OH BY THE WAY MY SISTER HAD SOMEONE GO INTO MA BANK ACCT AND MINE. MOM WAS SICK AFTER SISTER CAME IN .