I can fully understand you on this. My grandmother had a dog, a very sweet and smart one. I grew to love him. Every time I was there, he was after me the whole time and every time he saw me leaving, he was barking, letting me know he doesn't want me to.
When he got sick (he was old) and died, I cried for two days and I was sick, literally.
I hope she is going to be ok though.