My Mom Is 81 And I Didnt Know And Wasnt

my mom is 81 and I didnt know and wasnt told that my mom is on Olanzapine for last two years..Idont know why she was put on it..she may hae had the beginning of dementia..never diagnosed anything...nowshe has all the syptoms/side affects..my mom is weak and not responsible forher self...Im worried..what canbe done..my mom was not aware she has been on this drug either...omg