Do not feel guilty,please,as all Vets,use the same procedures,and it was just,taht either they bungled,the job,or Sox,was just not strong enough.It is hard enough,losing an older Cat,but to lose a Potential Great Cat,like Sox,is heartbreaking.The Found Cats angels,are keeping thier eyes open,for Sox,who because she passed on so early,will be one of Gods Eternal Kittens,and be lively,and playful throughout Eternity,and Sox,will still be a Kitten,when you are reunited!