I am truly sorry for your loss of Timothy. Lots of hugs to you. You were a great meowmy and he was very loved his whole life long.
Have you googled vets that do payment plans?.My daughter's cat is dying tonight due to Kidney failure. We are unfortunately all out of cash and no VET will see her without cash in hand. 4 Vets, all said no. Cash up front! This may have been the case for the response you made. You just never presume to know what is the condition or situation of someone else. Yes, by all means put the animal down peacefully. IF.....possible. Too bad for all of us today that this not always the case.