This is just so sad :( When things happen like this (freak accidents) the very first thing we want to do is blame ourselves, I know, because of the situation with my little cat of 14years, that you are not to blame. When we do things that result in the death of our babies we do take that to heart if we are caring pet owners. Keep in mind that things happen, and as awful as this is, it was just mean't for Stella to be here that short time. She had a purpose for being here no matter how short. (((((((Godspeed Little Baby Stella))))))) you and your family are in our prayers and thoughts.