Too many people view animals as family members just because they're domesticated, I for one watch the dog whisperer very often (probably too often because my wife likes it so much) but I do agree that they are just animals, and a lot of them are not balanced because people try to give them human traits, as far as your dog being sad if your sister's dog dies...dog packs see deaths all the time and move on. As far as you paying for it, I dropped out of college because I didn't have enough money to get back and forth and have regretted it more and more since (I was young and dumb), when there are so many other dogs out there that are healthy and need a home why would you risk your education for this one? Perhaps some will view that as cruel and insensitive, but I am a realist, seems to me you don't have the means to help her anyway and sometimes no matter how much you want to help someone you can't. Tell her if she wants to pay for it so bad there are plenty of places that offer loans.