u/Confused-as-hellll

Hi all, just need some advice or at least know im not alone feeling like that.
Next month it ll be 10 year since my mom passed from cancer. At first i wanted to do a little something with her old friends and colleagues to keep her memory alive, share a moment together you know. But i realized most people have moved on, dont really give a shit. Only my dad and 2 friends. Now i just want to avoid this day and crawl in bed.
To top it off, my dad s GF decided to organize a big family/friends lunch 4 days after the anniversary of my mom s passing, to celebrate her coming out of hospital after an accident. i love her care for her, but find it s poor timing....
Im a bit lost, I just dont know what to do. ( also planing on not going to the GF s lunch ... )
Thanks for reading