Selling late grandma's house...?

My mom just signed the papers for my grammys house to be sold to my cousin's husband's older brother. I am glad it is staying with someone I know but I can't help but feeling sad I won't be able to go back. I am in denial about my grandma but I also know shes gone. I still think she is just sitting at her chair in the kitchen table but shes not and i know shes not but its hard to not picture her there. I miss her so much. My mom grew up in that house and she lost her dad 23 years ago (a few months before I was born). I feel lucky to have had my grandma for these 22 years but I still wish she wasn't gone. She went in her sleep during a nap right after my mom and dad made their daily visit. My mom went everyday and my grandma was my moms whole world. She got dementia about 5 years ago and it worsed very quickly after she broke her hip 5 years ago. It was very sad to see her slowly forget but it wasn't till recently that things took a bad turn. She started having issues swallowing, sitting up, and talking. I had a feeling she would just pass in her sleep but of course we were not ready for that to happen so randomly. My brother, sister, and I all visited the day before and I took pics of her like I always did and I cherish those pictures so much. I miss her and i'll miss her forever. I'm sad to see the house go but that house will give another family so much happiness like it did to me and my family. If they knock that house down though ill be pissed bc my great-grandpa built it