Should I hide the medicine from my bedridden grandmother?
That seems cruel. Are you aware of the consequence?
Yes it might kill her but I am conflicted.
It is wrong to deny someone their medications. If you get caught with them people might think you are a thief and drug addict.
She's trying to kill me too. I won't forgive her, I will get revenge!
But just get away from her if she is trying to kill you. Trying to get revenge by hiding things from them won't look good. They are your grandparents and you should be expected to respect them.