Since she got home she still loafs around a lot... I wouldn't call it lethargy, just sleepiness. Before we brought he in you could tell there was something wrong, like she couldn't move and didn't have the will to, now she is moving a lot... She'll go get some water and purr when you pet her, but she is sleeping a lot.
She follows me to the kitchen and meows for her food and chows down on it... She walks around a bit, but then settles in, stretches out then falls asleep.
I don't think this is anything to worry about... do you?
She also isn't cleaning herself. I think she is trying to, but maybe she is still too weak or her muscles are too weak to bend that way.
Her fur is matted and she has food all over her face (I use baby wipes to clean her)
I think this is to be expected after a disease of this seriousness... But I am naturally a hypochondriac.