what does your vet say? it is never easy to let a pet go, but if they are suffering and no way to get better, then it is the kind thing to do. as far as she's still happy at times, how often is she happy compared to how often is she sad? maybe what you think is sad is her being very tired? anyway, Cookie was happy to the end, even when she couldnt breathe, when we went to see her and brought her fav toy, she tried to getup, and her eyes lit up when she saw us, they said she wouldnt know us but she did. but after that she had alot of trouble breathing again.

anyway, I think if it is terminal and shes in pain then you should have her put to sleep, you can hold her while they give her the shot..
I know its hard, I went thru it, I feel so bad for you, I'm sorry this happend to you.
I hope you keep us posted about what happens.

wow, what happend, I just posted and all of a sudden there are posts that werent there when I started?? LOL do I type that slow?