Re: Sick Kitty in Pittsburgh, PA Needs Help Quickly!!!
Welcome, and how sweet for you and your mother to try to help this poor kitty.
Can you bring the kitty in and try to care for it? Isolate her in a bathroom that is easy to clean/disinfect and wash hands between handling her and your own cats. At least then the kitty would be inside, warm and cared for while you try to find someone who could take it. Contact the rescues and adoption centers to try to locate someone who fosters cats/kittens for adoption.
If you are unable (skills) to care for this kitty, her problems require more intense medical treatment and you cannot afford to provide that or find someone who can, it may be in the kitty's best interest to be taken to an animal shelter where it can be humanely euthanized to end her suffering. Do not feel bad if this is what you must do. Feel good that you were able to show this poor kitty love and care just before you helped ease her from her failing body rather than allowing he to starve/suffer until she eventually expired cold, alone and unloved.