Hi everyone, thank you so much for all your information and insight. Sorry about not giving an update sooner, we've had some other things going on and I haven't been online very much.
We made an appointment with the closer neuro for a consultation. He won't do an MRI without it, and so we're scheduled for Monday the 14th. He was booked solid until then. In the meantime, our vet put Sadie on Furosemide and I am actually seeing an improvement! She seems happier and more alert and energetic. It's amazing the difference it has made. She's always been a happy girl, spinning in the air and dancing when she knows its dinnertime for example, but now she seems more joyful and for more than just a few moments - now for most of the day. I am very surprised it has made a difference. I am now wondering if we should take her off it just before her appointment so he can see her 'natural' state? I hate to make her worse again, but does he really need to see the symptoms himself or can he just take my word for it what her symptoms have been? I may give his office a call tomorrow when they open to see what they recommend. During the consult I will be checking out his credentials for SM surgery in case she needs that. Dr Bagley trained him so maybe he'll be okay. If not, we'll go to Dr Bagley across the state.
Anyway, I'll keep you posted on the consultation on the 14th! Thank you so much for all your suggestions and support!