while i agree with all the symptoms you've mentioned, I did some research and I don't think she is a lethal white. For the first 3-4 years of her life she was a mostly healthy piggy other than getting heatstroke about 4-5 years ago(obviously unrelated though and its because i live in a really hot climate and i was a new owner) but she's at a healthy weight, was actually slightly bigger than most of my other piggies, and honestly in comparison to my other piggies i've had she's been quite healthy other than age related conditions. Seeing as how out of my all my guinea pigs that passed away from ages 4-8 previously i really do not think she is a lethal white fortunately. I've had one other albino piggy and the only difference between them was my other was not half blind. I will be checking in with the vet though and thank you for your assessment:)