I'm going to sell my dead grandfather's house. Do I really need to let her widow stay there?
Can you tell me why you are thinking of evicting his widow?
Well, after all, it's my house.
I understand that your grandfather left his home to you. You don't have to let his wife continue to live there if you own the house. Offer to let her pay rent to you or give her a date that she has to move out by.
Well I will try my best to kick her out. I don't need some stupid bitch thinking that she can stay there.
Legally it's your house and you're free to do with it whatever you want. But I suggest you to deal with your grandfather's compassionately. Give her time to  move out.