A Little Advice Please

I don't care about it but everyone else seems to. They just haven't made any difference in my life, you know? I only invited them because then my grandma could come. But I don' even know if I care about having her there. I'm not close to this grandma the one I am close to is no longer here. I know I should be making the most of the time I have with her but it's extremely difficult when you always feel like she is judging you. I've never received advice from her and in a way i regret it. I wish I would have the guts to do more to have a relationship with her but I can't get past the judgment. Any advice?