Caring for my grandmothers cats

Hey everyone, my name is Emily. I'm starting this GoFundMe because my Grandmother suddenly passed at age 59. She had 15+ indoor/outdoor cats that she cared for.  My mom alone has taken on getting them all caught and the medical attention they need. She already has 10 of her own. Any tiny bit would help getting them litter, food, spayed/neutered, and medical attention several of them need. Thank you so much, I am trying to take any bit of stress off of her and these sweet cats that I can.