My Question Is,my Mother, We Have Been Dealing With A

my question is,my mother, we have been dealing with a bed sore that we lost control now today we go for MRI i have been dealing with this since Oct and no one will put her on antibolitic it has been6wks now I know it is i the bone once in bone is there anything they can do she is wheelchair bond and haijer lift is the mense of moving Why noone iswilling to give antibotics before now