ESA cat in need of help. Single mom struggling to survive.

Hi my name is Avery but this isn't about me. This is about my best friend Lizzy, the sister I never had but always wanted, and she needs help. She is currently trying to help her cat with FIC and he's currently having multiple flare ups. Sweet little Felix is normally a healthy functioning cat but with a lot of life changes it's been hard for him. He needs his medicated food and antibiotics and potentially a $3k surgery. I'm hoping with meds and food he will fully recover but that's not always how life goes. Not only is this sweet boy her ESA but also my godson's (Lizzy's son) favorite animal, his best friend if you will, and I know you remember what it's like to have a childhood animal best friend. Not only is my bestie a single mom with hours cut at work and trying her best to keep life afloat but now she's being thrown this along with so many other things I won't go into detail about, but just know life has not been kind and she needs the extra love. I don't know how else to help but I cannot see this family suffer as they are near and dear to my heart. If you can't donate I completely understand life is tough for all of us but please share. We're all human and we've all been there.