<human>: It was completely on accident. I saw the whole thing and there was no possible way to change what happened. The puppy has 2 skull fractures and possible brain damage, but they won't know for another couple days. This puppy was a graduation gift and so so so much more than the family dog. I can't even put into words how much we both loved this puppy, but for her it was a child. It's completely devastated her. We've been together 3 years and I hate seeing her even a little upset, let alone like this 

She can't stop blaming herself. She feels like it's completely her fault and I can't lessen that pain. I'm trying everything I can and I'm at a total loss. I need some advice. The vets give her a 25% chance of surviving. The bills are racking up and I'm trying not to be the bad guy, but we absolutely cannot afford to throw lots of money into this dog. Anyone ever been in a situation like this? Is there anything I can do besides provide her a shoulder to cry on and be there as much as possible?

Can you succinctly summarize the text in 1-3 sentences?
<bot>: gf mortally wounded dog. Feels like it's completely her fault when it was an accident. Need advice on what to do or how to help.